In 1990, 578 time zone transitions occurred across 293 regions worldwide. Clocks moved forward in 285 transitions (gaps) and turned back in 292 transitions (overlaps).
| Zone | Instant (UTC) | Local Wall Time | Shift | Abbreviation | DST | Effect |
|---|---|---|---|---|---|---|
| America/Lima | 1990-01-01T05:00:00Z | 1990-01-01 01:00:00 | -05:00 → -04:00 | -04 | Yes | gap |
| America/Noronha | 1990-02-11T01:00:00Z | 1990-02-10 23:00:00 | -01:00 → -02:00 | -02 | No | overlap |
| Brazil/DeNoronha | 1990-02-11T01:00:00Z | 1990-02-10 23:00:00 | -01:00 → -02:00 | -02 | No | overlap |
| America/Araguaina | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Bahia | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Fortaleza | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Maceio | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Recife | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Sao_Paulo | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| Brazil/East | 1990-02-11T02:00:00Z | 1990-02-10 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Campo_Grande | 1990-02-11T03:00:00Z | 1990-02-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| America/Cuiaba | 1990-02-11T03:00:00Z | 1990-02-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| America/Montevideo | 1990-02-25T02:00:00Z | 1990-02-24 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| Australia/LHI | 1990-03-03T15:00:00Z | 1990-03-04 01:30:00 | +11:00 → +10:30 | +1030 | No | overlap |
| Australia/Lord_Howe | 1990-03-03T15:00:00Z | 1990-03-04 01:30:00 | +11:00 → +10:30 | +1030 | No | overlap |
| Australia/ACT | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Brisbane | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Canberra | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Lindeman | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/NSW | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Queensland | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Sydney | 1990-03-03T16:00:00Z | 1990-03-04 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Broken_Hill | 1990-03-03T16:30:00Z | 1990-03-04 02:00:00 | +10:30 → +09:30 | ACST | No | overlap |
| Australia/Yancowinna | 1990-03-03T16:30:00Z | 1990-03-04 02:00:00 | +10:30 → +09:30 | ACST | No | overlap |
| America/Argentina/Buenos_Aires | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Catamarca | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/ComodRivadavia | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Cordoba | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Jujuy | 1990-03-04T02:00:00Z | 1990-03-03 22:00:00 | -02:00 → -04:00 | -04 | No | overlap |
| America/Argentina/La_Rioja | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Mendoza | 1990-03-04T02:00:00Z | 1990-03-03 22:00:00 | -02:00 → -04:00 | -04 | No | overlap |
| America/Argentina/Rio_Gallegos | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Salta | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/San_Juan | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Tucuman | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Argentina/Ushuaia | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Buenos_Aires | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Catamarca | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Cordoba | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Jujuy | 1990-03-04T02:00:00Z | 1990-03-03 22:00:00 | -02:00 → -04:00 | -04 | No | overlap |
| America/Mendoza | 1990-03-04T02:00:00Z | 1990-03-03 22:00:00 | -02:00 → -04:00 | -04 | No | overlap |
| America/Rosario | 1990-03-04T02:00:00Z | 1990-03-03 23:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| Pacific/Rarotonga | 1990-03-04T09:30:00Z | 1990-03-03 23:30:00 | -09:30 → -10:00 | -10 | No | overlap |
| America/Coyhaique | 1990-03-11T03:00:00Z | 1990-03-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| America/Punta_Arenas | 1990-03-11T03:00:00Z | 1990-03-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| America/Santiago | 1990-03-11T03:00:00Z | 1990-03-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| Antarctica/Palmer | 1990-03-11T03:00:00Z | 1990-03-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| Chile/Continental | 1990-03-11T03:00:00Z | 1990-03-10 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| Chile/EasterIsland | 1990-03-11T03:00:00Z | 1990-03-10 21:00:00 | -05:00 → -06:00 | -06 | No | overlap |
| Pacific/Easter | 1990-03-11T03:00:00Z | 1990-03-10 21:00:00 | -05:00 → -06:00 | -06 | No | overlap |
| America/Argentina/San_Luis | 1990-03-14T02:00:00Z | 1990-03-13 22:00:00 | -02:00 → -04:00 | -04 | No | overlap |
| Antarctica/McMurdo | 1990-03-17T14:00:00Z | 1990-03-18 02:00:00 | +13:00 → +12:00 | NZST | No | overlap |
| Antarctica/South_Pole | 1990-03-17T14:00:00Z | 1990-03-18 02:00:00 | +13:00 → +12:00 | NZST | No | overlap |
| NZ | 1990-03-17T14:00:00Z | 1990-03-18 02:00:00 | +13:00 → +12:00 | NZST | No | overlap |
| NZ-CHAT | 1990-03-17T14:00:00Z | 1990-03-18 02:45:00 | +13:45 → +12:45 | +1245 | No | overlap |
| Pacific/Auckland | 1990-03-17T14:00:00Z | 1990-03-18 02:00:00 | +13:00 → +12:00 | NZST | No | overlap |
| Pacific/Chatham | 1990-03-17T14:00:00Z | 1990-03-18 02:45:00 | +13:45 → +12:45 | +1245 | No | overlap |
| Antarctica/Macquarie | 1990-03-17T16:00:00Z | 1990-03-18 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Currie | 1990-03-17T16:00:00Z | 1990-03-18 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Hobart | 1990-03-17T16:00:00Z | 1990-03-18 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Melbourne | 1990-03-17T16:00:00Z | 1990-03-18 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Tasmania | 1990-03-17T16:00:00Z | 1990-03-18 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Victoria | 1990-03-17T16:00:00Z | 1990-03-18 02:00:00 | +11:00 → +10:00 | AEST | No | overlap |
| Australia/Adelaide | 1990-03-17T16:30:00Z | 1990-03-18 02:00:00 | +10:30 → +09:30 | ACST | No | overlap |
| Australia/South | 1990-03-17T16:30:00Z | 1990-03-18 02:00:00 | +10:30 → +09:30 | ACST | No | overlap |
| Africa/Windhoek | 1990-03-20T22:00:00Z | 1990-03-21 00:00:00 | +02:00 → +02:00 | CAT | No | offset-only |
| Pacific/Efate | 1990-03-24T12:00:00Z | 1990-03-24 23:00:00 | +12:00 → +11:00 | +11 | No | overlap |
| Asia/Anadyr | 1990-03-24T14:00:00Z | 1990-03-25 03:00:00 | +12:00 → +13:00 | +13 | Yes | gap |
| Asia/Kamchatka | 1990-03-24T14:00:00Z | 1990-03-25 03:00:00 | +12:00 → +13:00 | +13 | Yes | gap |
| Asia/Magadan | 1990-03-24T15:00:00Z | 1990-03-25 03:00:00 | +11:00 → +12:00 | +12 | Yes | gap |
| Asia/Sakhalin | 1990-03-24T15:00:00Z | 1990-03-25 03:00:00 | +11:00 → +12:00 | +12 | Yes | gap |
| Asia/Srednekolymsk | 1990-03-24T15:00:00Z | 1990-03-25 03:00:00 | +11:00 → +12:00 | +12 | Yes | gap |
| Asia/Ust-Nera | 1990-03-24T15:00:00Z | 1990-03-25 03:00:00 | +11:00 → +12:00 | +12 | Yes | gap |
| Asia/Choibalsan | 1990-03-24T16:00:00Z | 1990-03-25 01:00:00 | +08:00 → +09:00 | +09 | Yes | gap |
| Asia/Ulaanbaatar | 1990-03-24T16:00:00Z | 1990-03-25 01:00:00 | +08:00 → +09:00 | +09 | Yes | gap |
| Asia/Ulan_Bator | 1990-03-24T16:00:00Z | 1990-03-25 01:00:00 | +08:00 → +09:00 | +09 | Yes | gap |
| Asia/Vladivostok | 1990-03-24T16:00:00Z | 1990-03-25 03:00:00 | +10:00 → +11:00 | +11 | Yes | gap |
| Asia/Chita | 1990-03-24T17:00:00Z | 1990-03-25 03:00:00 | +09:00 → +10:00 | +10 | Yes | gap |
| Asia/Hovd | 1990-03-24T17:00:00Z | 1990-03-25 01:00:00 | +07:00 → +08:00 | +08 | Yes | gap |
| Asia/Khandyga | 1990-03-24T17:00:00Z | 1990-03-25 03:00:00 | +09:00 → +10:00 | +10 | Yes | gap |
| Asia/Yakutsk | 1990-03-24T17:00:00Z | 1990-03-25 03:00:00 | +09:00 → +10:00 | +10 | Yes | gap |
| Asia/Irkutsk | 1990-03-24T18:00:00Z | 1990-03-25 03:00:00 | +08:00 → +09:00 | +09 | Yes | gap |
| Asia/Barnaul | 1990-03-24T19:00:00Z | 1990-03-25 03:00:00 | +07:00 → +08:00 | +08 | Yes | gap |
| Asia/Krasnoyarsk | 1990-03-24T19:00:00Z | 1990-03-25 03:00:00 | +07:00 → +08:00 | +08 | Yes | gap |
| Asia/Novokuznetsk | 1990-03-24T19:00:00Z | 1990-03-25 03:00:00 | +07:00 → +08:00 | +08 | Yes | gap |
| Asia/Novosibirsk | 1990-03-24T19:00:00Z | 1990-03-25 03:00:00 | +07:00 → +08:00 | +08 | Yes | gap |
| Asia/Tomsk | 1990-03-24T19:00:00Z | 1990-03-25 03:00:00 | +07:00 → +08:00 | +08 | Yes | gap |
| Asia/Almaty | 1990-03-24T20:00:00Z | 1990-03-25 03:00:00 | +06:00 → +07:00 | +07 | Yes | gap |
| Asia/Bishkek | 1990-03-24T20:00:00Z | 1990-03-25 03:00:00 | +06:00 → +07:00 | +07 | Yes | gap |
| Asia/Dushanbe | 1990-03-24T20:00:00Z | 1990-03-25 03:00:00 | +06:00 → +07:00 | +07 | Yes | gap |
| Asia/Omsk | 1990-03-24T20:00:00Z | 1990-03-25 03:00:00 | +06:00 → +07:00 | +07 | Yes | gap |
| Asia/Tashkent | 1990-03-24T20:00:00Z | 1990-03-25 03:00:00 | +06:00 → +07:00 | +07 | Yes | gap |
| Asia/Aqtau | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Aqtobe | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Ashgabat | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Ashkhabad | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Atyrau | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Qostanay | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Qyzylorda | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Samarkand | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Yekaterinburg | 1990-03-24T21:00:00Z | 1990-03-25 03:00:00 | +05:00 → +06:00 | +06 | Yes | gap |
| Asia/Baghdad | 1990-03-24T22:00:00Z | 1990-03-25 02:00:00 | +03:00 → +04:00 | +04 | Yes | gap |
| Asia/Baku | 1990-03-24T22:00:00Z | 1990-03-25 03:00:00 | +04:00 → +05:00 | +05 | Yes | gap |
| Asia/Famagusta | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Asia/Gaza | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | IDT | Yes | gap |
| Asia/Hebron | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | IDT | Yes | gap |
| Asia/Jerusalem | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | IDT | Yes | gap |
| Asia/Nicosia | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Asia/Oral | 1990-03-24T22:00:00Z | 1990-03-25 03:00:00 | +04:00 → +05:00 | +05 | Yes | gap |
| Asia/Tbilisi | 1990-03-24T22:00:00Z | 1990-03-25 03:00:00 | +04:00 → +05:00 | +05 | Yes | gap |
| Asia/Tel_Aviv | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | IDT | Yes | gap |
| Asia/Yerevan | 1990-03-24T22:00:00Z | 1990-03-25 03:00:00 | +04:00 → +05:00 | +05 | Yes | gap |
| Europe/Nicosia | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Israel | 1990-03-24T22:00:00Z | 1990-03-25 01:00:00 | +02:00 → +03:00 | IDT | Yes | gap |
| Asia/Istanbul | 1990-03-24T23:00:00Z | 1990-03-25 02:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Astrakhan | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | +04 | Yes | gap |
| Europe/Chisinau | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Istanbul | 1990-03-24T23:00:00Z | 1990-03-25 02:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Kiev | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Kirov | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Kyiv | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Moscow | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Samara | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | +04 | Yes | gap |
| Europe/Saratov | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | +04 | Yes | gap |
| Europe/Tiraspol | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Ulyanovsk | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | +04 | Yes | gap |
| Europe/Uzhgorod | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Volgograd | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Zaporozhye | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Turkey | 1990-03-24T23:00:00Z | 1990-03-25 02:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| W-SU | 1990-03-24T23:00:00Z | 1990-03-25 03:00:00 | +03:00 → +04:00 | MSD | Yes | gap |
| Europe/Bucharest | 1990-03-25T00:00:00Z | 1990-03-25 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Kaliningrad | 1990-03-25T00:00:00Z | 1990-03-25 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Riga | 1990-03-25T00:00:00Z | 1990-03-25 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Sofia | 1990-03-25T00:00:00Z | 1990-03-25 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Tallinn | 1990-03-25T00:00:00Z | 1990-03-25 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Vilnius | 1990-03-25T00:00:00Z | 1990-03-25 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Africa/Ceuta | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| America/Danmarkshavn | 1990-03-25T01:00:00Z | 1990-03-24 23:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Godthab | 1990-03-25T01:00:00Z | 1990-03-24 23:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Nuuk | 1990-03-25T01:00:00Z | 1990-03-24 23:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Scoresbysund | 1990-03-25T01:00:00Z | 1990-03-25 01:00:00 | -01:00 → +00:00 | +00 | Yes | gap |
| Arctic/Longyearbyen | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Atlantic/Azores | 1990-03-25T01:00:00Z | 1990-03-25 01:00:00 | -01:00 → +00:00 | +00 | Yes | gap |
| Atlantic/Canary | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Atlantic/Faeroe | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Atlantic/Faroe | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Atlantic/Jan_Mayen | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Atlantic/Madeira | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| CET | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| EET | 1990-03-25T01:00:00Z | 1990-03-25 04:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Eire | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | IST | No | gap |
| Europe/Amsterdam | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Andorra | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Athens | 1990-03-25T01:00:00Z | 1990-03-25 04:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Belfast | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Belgrade | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Berlin | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Bratislava | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Brussels | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Budapest | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Busingen | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Copenhagen | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Dublin | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | IST | No | gap |
| Europe/Gibraltar | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Guernsey | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Helsinki | 1990-03-25T01:00:00Z | 1990-03-25 04:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Isle_of_Man | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Jersey | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Lisbon | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Europe/Ljubljana | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/London | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Luxembourg | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Madrid | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Malta | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Mariehamn | 1990-03-25T01:00:00Z | 1990-03-25 04:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Europe/Monaco | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Oslo | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Paris | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Podgorica | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Prague | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Rome | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/San_Marino | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Sarajevo | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Skopje | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Stockholm | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Tirane | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Vaduz | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Vatican | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Vienna | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Warsaw | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Zagreb | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Europe/Zurich | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| GB | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| GB-Eire | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| MET | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Poland | 1990-03-25T01:00:00Z | 1990-03-25 03:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Portugal | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| WET | 1990-03-25T01:00:00Z | 1990-03-25 02:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Asia/Damascus | 1990-04-01T00:00:00Z | 1990-04-01 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| America/Asuncion | 1990-04-01T03:00:00Z | 1990-03-31 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| America/St_Johns | 1990-04-01T03:31:00Z | 1990-04-01 01:01:00 | -03:30 → -02:30 | NDT | Yes | gap |
| Canada/Newfoundland | 1990-04-01T03:31:00Z | 1990-04-01 01:01:00 | -03:30 → -02:30 | NDT | Yes | gap |
| America/Lima | 1990-04-01T04:00:00Z | 1990-03-31 23:00:00 | -04:00 → -05:00 | -05 | No | overlap |
| America/Goose_Bay | 1990-04-01T04:01:00Z | 1990-04-01 01:01:00 | -04:00 → -03:00 | ADT | Yes | gap |
| America/Havana | 1990-04-01T05:00:00Z | 1990-04-01 01:00:00 | -05:00 → -04:00 | CDT | Yes | gap |
| America/Miquelon | 1990-04-01T05:00:00Z | 1990-04-01 03:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| Cuba | 1990-04-01T05:00:00Z | 1990-04-01 01:00:00 | -05:00 → -04:00 | CDT | Yes | gap |
| America/Glace_Bay | 1990-04-01T06:00:00Z | 1990-04-01 03:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| America/Halifax | 1990-04-01T06:00:00Z | 1990-04-01 03:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| America/Moncton | 1990-04-01T06:00:00Z | 1990-04-01 03:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| America/Port-au-Prince | 1990-04-01T06:00:00Z | 1990-04-01 02:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| Atlantic/Bermuda | 1990-04-01T06:00:00Z | 1990-04-01 03:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| Canada/Atlantic | 1990-04-01T06:00:00Z | 1990-04-01 03:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| America/Detroit | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Grand_Turk | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Iqaluit | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Kentucky/Louisville | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Louisville | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Montreal | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Nassau | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/New_York | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Nipigon | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Pangnirtung | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Thunder_Bay | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Toronto | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| Canada/Eastern | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| EST5EDT | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| US/Eastern | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| US/Michigan | 1990-04-01T07:00:00Z | 1990-04-01 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Chicago | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Indiana/Knox | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Kentucky/Monticello | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Knox_IN | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Menominee | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Rainy_River | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Rankin_Inlet | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Resolute | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Winnipeg | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| CST6CDT | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| Canada/Central | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| US/Central | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| US/Indiana-Starke | 1990-04-01T08:00:00Z | 1990-04-01 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Boise | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Cambridge_Bay | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Denver | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Edmonton | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Inuvik | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/North_Dakota/Beulah | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/North_Dakota/Center | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/North_Dakota/New_Salem | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Shiprock | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Yellowknife | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| Canada/Mountain | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| MST7MDT | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| Navajo | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| US/Mountain | 1990-04-01T09:00:00Z | 1990-04-01 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Dawson | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Ensenada | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Fort_Nelson | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Los_Angeles | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Santa_Isabel | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Tijuana | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Vancouver | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Whitehorse | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| Canada/Pacific | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| Canada/Yukon | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| Mexico/BajaNorte | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| PST8PDT | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| US/Pacific | 1990-04-01T10:00:00Z | 1990-04-01 03:00:00 | -08:00 → -07:00 | PDT | Yes | gap |
| America/Anchorage | 1990-04-01T11:00:00Z | 1990-04-01 03:00:00 | -09:00 → -08:00 | AKDT | Yes | gap |
| America/Juneau | 1990-04-01T11:00:00Z | 1990-04-01 03:00:00 | -09:00 → -08:00 | AKDT | Yes | gap |
| America/Nome | 1990-04-01T11:00:00Z | 1990-04-01 03:00:00 | -09:00 → -08:00 | AKDT | Yes | gap |
| America/Sitka | 1990-04-01T11:00:00Z | 1990-04-01 03:00:00 | -09:00 → -08:00 | AKDT | Yes | gap |
| America/Yakutat | 1990-04-01T11:00:00Z | 1990-04-01 03:00:00 | -09:00 → -08:00 | AKDT | Yes | gap |
| US/Alaska | 1990-04-01T11:00:00Z | 1990-04-01 03:00:00 | -09:00 → -08:00 | AKDT | Yes | gap |
| America/Adak | 1990-04-01T12:00:00Z | 1990-04-01 03:00:00 | -10:00 → -09:00 | HDT | Yes | gap |
| America/Atka | 1990-04-01T12:00:00Z | 1990-04-01 03:00:00 | -10:00 → -09:00 | HDT | Yes | gap |
| US/Aleutian | 1990-04-01T12:00:00Z | 1990-04-01 03:00:00 | -10:00 → -09:00 | HDT | Yes | gap |
| Asia/Chongqing | 1990-04-14T18:00:00Z | 1990-04-15 03:00:00 | +08:00 → +09:00 | CDT | Yes | gap |
| Asia/Chungking | 1990-04-14T18:00:00Z | 1990-04-15 03:00:00 | +08:00 → +09:00 | CDT | Yes | gap |
| Asia/Harbin | 1990-04-14T18:00:00Z | 1990-04-15 03:00:00 | +08:00 → +09:00 | CDT | Yes | gap |
| Asia/Shanghai | 1990-04-14T18:00:00Z | 1990-04-15 03:00:00 | +08:00 → +09:00 | CDT | Yes | gap |
| PRC | 1990-04-14T18:00:00Z | 1990-04-15 03:00:00 | +08:00 → +09:00 | CDT | Yes | gap |
| Atlantic/Stanley | 1990-04-22T03:00:00Z | 1990-04-21 23:00:00 | -03:00 → -04:00 | -04 | No | overlap |
| Asia/Amman | 1990-04-26T22:00:00Z | 1990-04-27 01:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Asia/Beirut | 1990-04-30T22:00:00Z | 1990-05-01 01:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Africa/Cairo | 1990-04-30T23:00:00Z | 1990-05-01 02:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Africa/Tunis | 1990-04-30T23:00:00Z | 1990-05-01 01:00:00 | +01:00 → +02:00 | CEST | Yes | gap |
| Egypt | 1990-04-30T23:00:00Z | 1990-05-01 02:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Africa/Tripoli | 1990-05-03T23:00:00Z | 1990-05-04 01:00:00 | +01:00 → +02:00 | EET | No | gap |
| Libya | 1990-05-03T23:00:00Z | 1990-05-04 01:00:00 | +01:00 → +02:00 | EET | No | gap |
| Europe/Chisinau | 1990-05-05T22:00:00Z | 1990-05-06 01:00:00 | +04:00 → +03:00 | EEST | Yes | overlap |
| Europe/Tiraspol | 1990-05-05T22:00:00Z | 1990-05-06 01:00:00 | +04:00 → +03:00 | EEST | Yes | overlap |
| Asia/Manila | 1990-05-20T16:00:00Z | 1990-05-21 01:00:00 | +08:00 → +09:00 | PDT | Yes | gap |
| Europe/Kiev | 1990-06-30T22:00:00Z | 1990-07-01 01:00:00 | +04:00 → +03:00 | EEST | Yes | overlap |
| Europe/Kyiv | 1990-06-30T22:00:00Z | 1990-07-01 01:00:00 | +04:00 → +03:00 | EEST | Yes | overlap |
| Europe/Uzhgorod | 1990-06-30T22:00:00Z | 1990-07-01 01:00:00 | +04:00 → +03:00 | EEST | Yes | overlap |
| Europe/Zaporozhye | 1990-06-30T22:00:00Z | 1990-07-01 01:00:00 | +04:00 → +03:00 | EEST | Yes | overlap |
| Europe/Simferopol | 1990-06-30T23:00:00Z | 1990-07-01 01:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Asia/Manila | 1990-07-28T15:00:00Z | 1990-07-28 23:00:00 | +09:00 → +08:00 | PST | No | overlap |
| Asia/Gaza | 1990-08-25T21:00:00Z | 1990-08-25 23:00:00 | +03:00 → +02:00 | IST | No | overlap |
| Asia/Hebron | 1990-08-25T21:00:00Z | 1990-08-25 23:00:00 | +03:00 → +02:00 | IST | No | overlap |
| Asia/Jerusalem | 1990-08-25T21:00:00Z | 1990-08-25 23:00:00 | +03:00 → +02:00 | IST | No | overlap |
| Asia/Tel_Aviv | 1990-08-25T21:00:00Z | 1990-08-25 23:00:00 | +03:00 → +02:00 | IST | No | overlap |
| Israel | 1990-08-25T21:00:00Z | 1990-08-25 23:00:00 | +03:00 → +02:00 | IST | No | overlap |
| Atlantic/Stanley | 1990-09-09T04:00:00Z | 1990-09-09 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Asia/Chongqing | 1990-09-15T17:00:00Z | 1990-09-16 01:00:00 | +09:00 → +08:00 | CST | No | overlap |
| Asia/Chungking | 1990-09-15T17:00:00Z | 1990-09-16 01:00:00 | +09:00 → +08:00 | CST | No | overlap |
| Asia/Harbin | 1990-09-15T17:00:00Z | 1990-09-16 01:00:00 | +09:00 → +08:00 | CST | No | overlap |
| Asia/Shanghai | 1990-09-15T17:00:00Z | 1990-09-16 01:00:00 | +09:00 → +08:00 | CST | No | overlap |
| PRC | 1990-09-15T17:00:00Z | 1990-09-16 01:00:00 | +09:00 → +08:00 | CST | No | overlap |
| America/Coyhaique | 1990-09-16T04:00:00Z | 1990-09-16 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Punta_Arenas | 1990-09-16T04:00:00Z | 1990-09-16 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Santiago | 1990-09-16T04:00:00Z | 1990-09-16 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Antarctica/Palmer | 1990-09-16T04:00:00Z | 1990-09-16 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Chile/Continental | 1990-09-16T04:00:00Z | 1990-09-16 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Chile/EasterIsland | 1990-09-16T04:00:00Z | 1990-09-15 23:00:00 | -06:00 → -05:00 | -05 | Yes | gap |
| Pacific/Easter | 1990-09-16T04:00:00Z | 1990-09-15 23:00:00 | -06:00 → -05:00 | -05 | Yes | gap |
| Pacific/Efate | 1990-09-22T13:00:00Z | 1990-09-23 01:00:00 | +11:00 → +12:00 | +12 | Yes | gap |
| Asia/Anadyr | 1990-09-29T14:00:00Z | 1990-09-30 02:00:00 | +13:00 → +12:00 | +12 | No | overlap |
| Asia/Kamchatka | 1990-09-29T14:00:00Z | 1990-09-30 02:00:00 | +13:00 → +12:00 | +12 | No | overlap |
| Asia/Choibalsan | 1990-09-29T15:00:00Z | 1990-09-29 23:00:00 | +09:00 → +08:00 | +08 | No | overlap |
| Asia/Magadan | 1990-09-29T15:00:00Z | 1990-09-30 02:00:00 | +12:00 → +11:00 | +11 | No | overlap |
| Asia/Sakhalin | 1990-09-29T15:00:00Z | 1990-09-30 02:00:00 | +12:00 → +11:00 | +11 | No | overlap |
| Asia/Srednekolymsk | 1990-09-29T15:00:00Z | 1990-09-30 02:00:00 | +12:00 → +11:00 | +11 | No | overlap |
| Asia/Ulaanbaatar | 1990-09-29T15:00:00Z | 1990-09-29 23:00:00 | +09:00 → +08:00 | +08 | No | overlap |
| Asia/Ulan_Bator | 1990-09-29T15:00:00Z | 1990-09-29 23:00:00 | +09:00 → +08:00 | +08 | No | overlap |
| Asia/Ust-Nera | 1990-09-29T15:00:00Z | 1990-09-30 02:00:00 | +12:00 → +11:00 | +11 | No | overlap |
| Asia/Hovd | 1990-09-29T16:00:00Z | 1990-09-29 23:00:00 | +08:00 → +07:00 | +07 | No | overlap |
| Asia/Vladivostok | 1990-09-29T16:00:00Z | 1990-09-30 02:00:00 | +11:00 → +10:00 | +10 | No | overlap |
| Asia/Chita | 1990-09-29T17:00:00Z | 1990-09-30 02:00:00 | +10:00 → +09:00 | +09 | No | overlap |
| Asia/Khandyga | 1990-09-29T17:00:00Z | 1990-09-30 02:00:00 | +10:00 → +09:00 | +09 | No | overlap |
| Asia/Yakutsk | 1990-09-29T17:00:00Z | 1990-09-30 02:00:00 | +10:00 → +09:00 | +09 | No | overlap |
| Asia/Irkutsk | 1990-09-29T18:00:00Z | 1990-09-30 02:00:00 | +09:00 → +08:00 | +08 | No | overlap |
| Asia/Barnaul | 1990-09-29T19:00:00Z | 1990-09-30 02:00:00 | +08:00 → +07:00 | +07 | No | overlap |
| Asia/Krasnoyarsk | 1990-09-29T19:00:00Z | 1990-09-30 02:00:00 | +08:00 → +07:00 | +07 | No | overlap |
| Asia/Novokuznetsk | 1990-09-29T19:00:00Z | 1990-09-30 02:00:00 | +08:00 → +07:00 | +07 | No | overlap |
| Asia/Novosibirsk | 1990-09-29T19:00:00Z | 1990-09-30 02:00:00 | +08:00 → +07:00 | +07 | No | overlap |
| Asia/Tomsk | 1990-09-29T19:00:00Z | 1990-09-30 02:00:00 | +08:00 → +07:00 | +07 | No | overlap |
| Asia/Almaty | 1990-09-29T20:00:00Z | 1990-09-30 02:00:00 | +07:00 → +06:00 | +06 | No | overlap |
| Asia/Bishkek | 1990-09-29T20:00:00Z | 1990-09-30 02:00:00 | +07:00 → +06:00 | +06 | No | overlap |
| Asia/Dushanbe | 1990-09-29T20:00:00Z | 1990-09-30 02:00:00 | +07:00 → +06:00 | +06 | No | overlap |
| Asia/Omsk | 1990-09-29T20:00:00Z | 1990-09-30 02:00:00 | +07:00 → +06:00 | +06 | No | overlap |
| Asia/Tashkent | 1990-09-29T20:00:00Z | 1990-09-30 02:00:00 | +07:00 → +06:00 | +06 | No | overlap |
| Asia/Aqtau | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Aqtobe | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Ashgabat | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Ashkhabad | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Atyrau | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Famagusta | 1990-09-29T21:00:00Z | 1990-09-29 23:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Asia/Nicosia | 1990-09-29T21:00:00Z | 1990-09-29 23:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Asia/Qostanay | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Qyzylorda | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Samarkand | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Asia/Yekaterinburg | 1990-09-29T21:00:00Z | 1990-09-30 02:00:00 | +06:00 → +05:00 | +05 | No | overlap |
| Europe/Nicosia | 1990-09-29T21:00:00Z | 1990-09-29 23:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Asia/Baghdad | 1990-09-29T22:00:00Z | 1990-09-30 01:00:00 | +04:00 → +03:00 | +03 | No | overlap |
| Asia/Baku | 1990-09-29T22:00:00Z | 1990-09-30 02:00:00 | +05:00 → +04:00 | +04 | No | overlap |
| Asia/Oral | 1990-09-29T22:00:00Z | 1990-09-30 02:00:00 | +05:00 → +04:00 | +04 | No | overlap |
| Asia/Tbilisi | 1990-09-29T22:00:00Z | 1990-09-30 02:00:00 | +05:00 → +04:00 | +04 | No | overlap |
| Asia/Yerevan | 1990-09-29T22:00:00Z | 1990-09-30 02:00:00 | +05:00 → +04:00 | +04 | No | overlap |
| Africa/Tunis | 1990-09-29T23:00:00Z | 1990-09-30 00:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Asia/Damascus | 1990-09-29T23:00:00Z | 1990-09-30 01:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Asia/Istanbul | 1990-09-29T23:00:00Z | 1990-09-30 01:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Astrakhan | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | +03 | No | overlap |
| Europe/Istanbul | 1990-09-29T23:00:00Z | 1990-09-30 01:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Kirov | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | MSK | No | overlap |
| Europe/Moscow | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | MSK | No | overlap |
| Europe/Samara | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | +03 | No | overlap |
| Europe/Saratov | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | +03 | No | overlap |
| Europe/Ulyanovsk | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | +03 | No | overlap |
| Europe/Volgograd | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | MSK | No | overlap |
| Turkey | 1990-09-29T23:00:00Z | 1990-09-30 01:00:00 | +03:00 → +02:00 | EET | No | overlap |
| W-SU | 1990-09-29T23:00:00Z | 1990-09-30 02:00:00 | +04:00 → +03:00 | MSK | No | overlap |
| Europe/Bucharest | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Chisinau | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Kaliningrad | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Riga | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Sofia | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Tallinn | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Tiraspol | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Vilnius | 1990-09-30T00:00:00Z | 1990-09-30 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Africa/Ceuta | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| America/Danmarkshavn | 1990-09-30T01:00:00Z | 1990-09-29 22:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Godthab | 1990-09-30T01:00:00Z | 1990-09-29 22:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Nuuk | 1990-09-30T01:00:00Z | 1990-09-29 22:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Scoresbysund | 1990-09-30T01:00:00Z | 1990-09-30 00:00:00 | +00:00 → -01:00 | -01 | No | overlap |
| Arctic/Longyearbyen | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Atlantic/Azores | 1990-09-30T01:00:00Z | 1990-09-30 00:00:00 | +00:00 → -01:00 | -01 | No | overlap |
| Atlantic/Canary | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Atlantic/Faeroe | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Atlantic/Faroe | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Atlantic/Jan_Mayen | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Atlantic/Madeira | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| CET | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| EET | 1990-09-30T01:00:00Z | 1990-09-30 03:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Amsterdam | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Andorra | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Athens | 1990-09-30T01:00:00Z | 1990-09-30 03:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Belgrade | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Berlin | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Bratislava | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Brussels | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Budapest | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Busingen | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Copenhagen | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Gibraltar | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Helsinki | 1990-09-30T01:00:00Z | 1990-09-30 03:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Lisbon | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Europe/Ljubljana | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Luxembourg | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Madrid | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Malta | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Mariehamn | 1990-09-30T01:00:00Z | 1990-09-30 03:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Europe/Monaco | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Oslo | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Paris | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Podgorica | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Prague | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Rome | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/San_Marino | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Sarajevo | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Skopje | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Stockholm | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Tirane | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Vaduz | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Vatican | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Vienna | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Warsaw | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Zagreb | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Europe/Zurich | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| MET | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Poland | 1990-09-30T01:00:00Z | 1990-09-30 02:00:00 | +02:00 → +01:00 | CET | No | overlap |
| Portugal | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| WET | 1990-09-30T01:00:00Z | 1990-09-30 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Africa/Cairo | 1990-10-01T00:00:00Z | 1990-10-01 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Egypt | 1990-10-01T00:00:00Z | 1990-10-01 02:00:00 | +03:00 → +02:00 | EET | No | overlap |
| America/Asuncion | 1990-10-01T04:00:00Z | 1990-10-01 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Asia/Amman | 1990-10-04T21:00:00Z | 1990-10-04 23:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Antarctica/McMurdo | 1990-10-06T14:00:00Z | 1990-10-07 03:00:00 | +12:00 → +13:00 | NZDT | Yes | gap |
| Antarctica/South_Pole | 1990-10-06T14:00:00Z | 1990-10-07 03:00:00 | +12:00 → +13:00 | NZDT | Yes | gap |
| NZ | 1990-10-06T14:00:00Z | 1990-10-07 03:00:00 | +12:00 → +13:00 | NZDT | Yes | gap |
| NZ-CHAT | 1990-10-06T14:00:00Z | 1990-10-07 03:45:00 | +12:45 → +13:45 | +1345 | Yes | gap |
| Pacific/Auckland | 1990-10-06T14:00:00Z | 1990-10-07 03:00:00 | +12:00 → +13:00 | NZDT | Yes | gap |
| Pacific/Chatham | 1990-10-06T14:00:00Z | 1990-10-07 03:45:00 | +12:45 → +13:45 | +1345 | Yes | gap |
| America/Havana | 1990-10-14T04:00:00Z | 1990-10-13 23:00:00 | -04:00 → -05:00 | CST | No | overlap |
| Cuba | 1990-10-14T04:00:00Z | 1990-10-13 23:00:00 | -04:00 → -05:00 | CST | No | overlap |
| America/Argentina/Mendoza | 1990-10-15T04:00:00Z | 1990-10-15 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Argentina/San_Luis | 1990-10-15T04:00:00Z | 1990-10-15 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Mendoza | 1990-10-15T04:00:00Z | 1990-10-15 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Asia/Beirut | 1990-10-15T21:00:00Z | 1990-10-15 23:00:00 | +03:00 → +02:00 | EET | No | overlap |
| America/Argentina/Buenos_Aires | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/Catamarca | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/ComodRivadavia | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/Cordoba | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/La_Rioja | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/Rio_Gallegos | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/Salta | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/San_Juan | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/Tucuman | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Argentina/Ushuaia | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Bahia | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Buenos_Aires | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Catamarca | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Cordoba | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Montevideo | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Rosario | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Sao_Paulo | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| Brazil/East | 1990-10-21T03:00:00Z | 1990-10-21 01:00:00 | -03:00 → -02:00 | -02 | Yes | gap |
| America/Campo_Grande | 1990-10-21T04:00:00Z | 1990-10-21 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Cuiaba | 1990-10-21T04:00:00Z | 1990-10-21 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Australia/LHI | 1990-10-27T15:30:00Z | 1990-10-28 02:30:00 | +10:30 → +11:00 | +11 | Yes | gap |
| Australia/Lord_Howe | 1990-10-27T15:30:00Z | 1990-10-28 02:30:00 | +10:30 → +11:00 | +11 | Yes | gap |
| Antarctica/Macquarie | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/ACT | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Brisbane | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Canberra | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Currie | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Hobart | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Lindeman | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Melbourne | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/NSW | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Queensland | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Sydney | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Tasmania | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Victoria | 1990-10-27T16:00:00Z | 1990-10-28 03:00:00 | +10:00 → +11:00 | AEDT | Yes | gap |
| Australia/Adelaide | 1990-10-27T16:30:00Z | 1990-10-28 03:00:00 | +09:30 → +10:30 | ACDT | Yes | gap |
| Australia/Broken_Hill | 1990-10-27T16:30:00Z | 1990-10-28 03:00:00 | +09:30 → +10:30 | ACDT | Yes | gap |
| Australia/South | 1990-10-27T16:30:00Z | 1990-10-28 03:00:00 | +09:30 → +10:30 | ACDT | Yes | gap |
| Australia/Yancowinna | 1990-10-27T16:30:00Z | 1990-10-28 03:00:00 | +09:30 → +10:30 | ACDT | Yes | gap |
| Eire | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | Yes | overlap |
| Europe/Belfast | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Dublin | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | Yes | overlap |
| Europe/Guernsey | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Isle_of_Man | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Jersey | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/London | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| GB | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| GB-Eire | 1990-10-28T01:00:00Z | 1990-10-28 01:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| America/St_Johns | 1990-10-28T02:31:00Z | 1990-10-27 23:01:00 | -02:30 → -03:30 | NST | No | overlap |
| Canada/Newfoundland | 1990-10-28T02:31:00Z | 1990-10-27 23:01:00 | -02:30 → -03:30 | NST | No | overlap |
| America/Goose_Bay | 1990-10-28T03:01:00Z | 1990-10-27 23:01:00 | -03:00 → -04:00 | AST | No | overlap |
| America/Argentina/Jujuy | 1990-10-28T04:00:00Z | 1990-10-28 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Jujuy | 1990-10-28T04:00:00Z | 1990-10-28 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| America/Miquelon | 1990-10-28T04:00:00Z | 1990-10-28 01:00:00 | -02:00 → -03:00 | -03 | No | overlap |
| America/Glace_Bay | 1990-10-28T05:00:00Z | 1990-10-28 01:00:00 | -03:00 → -04:00 | AST | No | overlap |
| America/Halifax | 1990-10-28T05:00:00Z | 1990-10-28 01:00:00 | -03:00 → -04:00 | AST | No | overlap |
| America/Moncton | 1990-10-28T05:00:00Z | 1990-10-28 01:00:00 | -03:00 → -04:00 | AST | No | overlap |
| Atlantic/Bermuda | 1990-10-28T05:00:00Z | 1990-10-28 01:00:00 | -03:00 → -04:00 | AST | No | overlap |
| Canada/Atlantic | 1990-10-28T05:00:00Z | 1990-10-28 01:00:00 | -03:00 → -04:00 | AST | No | overlap |
| America/Detroit | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Grand_Turk | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Iqaluit | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Kentucky/Louisville | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Louisville | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Montreal | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Nassau | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/New_York | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Nipigon | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Pangnirtung | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Port-au-Prince | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Thunder_Bay | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Toronto | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| Canada/Eastern | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| EST5EDT | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| US/Eastern | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| US/Michigan | 1990-10-28T06:00:00Z | 1990-10-28 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Chicago | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Indiana/Knox | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Kentucky/Monticello | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Knox_IN | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Menominee | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Rankin_Inlet | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Resolute | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| CST6CDT | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| US/Central | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| US/Indiana-Starke | 1990-10-28T07:00:00Z | 1990-10-28 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Boise | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Cambridge_Bay | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Denver | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Edmonton | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Inuvik | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/North_Dakota/Beulah | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/North_Dakota/Center | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/North_Dakota/New_Salem | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Rainy_River | 1990-10-28T08:00:00Z | 1990-10-28 02:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Shiprock | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Winnipeg | 1990-10-28T08:00:00Z | 1990-10-28 02:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Yellowknife | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| Canada/Central | 1990-10-28T08:00:00Z | 1990-10-28 02:00:00 | -05:00 → -06:00 | CST | No | overlap |
| Canada/Mountain | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| MST7MDT | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| Navajo | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| US/Mountain | 1990-10-28T08:00:00Z | 1990-10-28 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Dawson | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Ensenada | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Fort_Nelson | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Los_Angeles | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Santa_Isabel | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Tijuana | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Vancouver | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Whitehorse | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| Canada/Pacific | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| Canada/Yukon | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| Mexico/BajaNorte | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| PST8PDT | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| US/Pacific | 1990-10-28T09:00:00Z | 1990-10-28 01:00:00 | -07:00 → -08:00 | PST | No | overlap |
| America/Anchorage | 1990-10-28T10:00:00Z | 1990-10-28 01:00:00 | -08:00 → -09:00 | AKST | No | overlap |
| America/Juneau | 1990-10-28T10:00:00Z | 1990-10-28 01:00:00 | -08:00 → -09:00 | AKST | No | overlap |
| America/Nome | 1990-10-28T10:00:00Z | 1990-10-28 01:00:00 | -08:00 → -09:00 | AKST | No | overlap |
| America/Sitka | 1990-10-28T10:00:00Z | 1990-10-28 01:00:00 | -08:00 → -09:00 | AKST | No | overlap |
| America/Yakutat | 1990-10-28T10:00:00Z | 1990-10-28 01:00:00 | -08:00 → -09:00 | AKST | No | overlap |
| Pacific/Rarotonga | 1990-10-28T10:00:00Z | 1990-10-28 00:30:00 | -10:00 → -09:30 | -0930 | Yes | gap |
| US/Alaska | 1990-10-28T10:00:00Z | 1990-10-28 01:00:00 | -08:00 → -09:00 | AKST | No | overlap |
| America/Adak | 1990-10-28T11:00:00Z | 1990-10-28 01:00:00 | -09:00 → -10:00 | HST | No | overlap |
| America/Atka | 1990-10-28T11:00:00Z | 1990-10-28 01:00:00 | -09:00 → -10:00 | HST | No | overlap |
| US/Aleutian | 1990-10-28T11:00:00Z | 1990-10-28 01:00:00 | -09:00 → -10:00 | HST | No | overlap |
Mark Davies (1990-10-03):
the 1989/90 year was a trial of an extended "daylight saving" period. This trial was deemed successful and the extended period adopted for subsequent years (with the addition of a further week at the start). source - phone call to Ministry of Internal Affairs Head Office.