Time Zone Changes in 1923
In 1923, 77 time zone transitions occurred across 40 regions worldwide. Clocks moved forward in 40 transitions (gaps) and turned back in 37 transitions (overlaps).
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Transitions in 1923 (77)
| Zone | Instant (UTC) | Local Wall Time | Shift | Abbreviation | DST | Effect |
|---|---|---|---|---|---|---|
| Africa/Accra | 1923-01-01T01:40:00Z | 1923-01-01 01:40:00 | +00:20 → +00:00 | GMT | No | overlap |
| America/Belize | 1923-02-11T05:30:00Z | 1923-02-10 23:30:00 | -05:30 → -06:00 | CST | No | overlap |
| Asia/Damascus | 1923-04-15T00:00:00Z | 1923-04-15 03:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| Asia/Beirut | 1923-04-21T22:00:00Z | 1923-04-22 01:00:00 | +02:00 → +03:00 | EEST | Yes | gap |
| CET | 1923-04-21T23:00:00Z | 1923-04-22 00:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Europe/Brussels | 1923-04-21T23:00:00Z | 1923-04-22 00:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Europe/Luxembourg | 1923-04-21T23:00:00Z | 1923-04-22 00:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| MET | 1923-04-21T23:00:00Z | 1923-04-22 00:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Eire | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | IST | Yes | gap |
| Europe/Belfast | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Dublin | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | IST | Yes | gap |
| Europe/Gibraltar | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Guernsey | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Isle_of_Man | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/Jersey | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| Europe/London | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| GB | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| GB-Eire | 1923-04-22T02:00:00Z | 1923-04-22 03:00:00 | +00:00 → +01:00 | BST | Yes | gap |
| America/New_York | 1923-04-29T07:00:00Z | 1923-04-29 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| US/Eastern | 1923-04-29T07:00:00Z | 1923-04-29 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Chicago | 1923-04-29T08:00:00Z | 1923-04-29 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| US/Central | 1923-04-29T08:00:00Z | 1923-04-29 03:00:00 | -06:00 → -05:00 | CDT | Yes | gap |
| America/Edmonton | 1923-04-29T09:00:00Z | 1923-04-29 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Yellowknife | 1923-04-29T09:00:00Z | 1923-04-29 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| Canada/Mountain | 1923-04-29T09:00:00Z | 1923-04-29 03:00:00 | -07:00 → -06:00 | MDT | Yes | gap |
| America/Halifax | 1923-05-06T04:00:00Z | 1923-05-06 01:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| Canada/Atlantic | 1923-05-06T04:00:00Z | 1923-05-06 01:00:00 | -04:00 → -03:00 | ADT | Yes | gap |
| America/St_Johns | 1923-05-07T02:30:52Z | 1923-05-07 00:00:00 | -03:30:52 → -02:30:52 | NDT | Yes | gap |
| Canada/Newfoundland | 1923-05-07T02:30:52Z | 1923-05-07 00:00:00 | -03:30:52 → -02:30:52 | NDT | Yes | gap |
| America/Montreal | 1923-05-13T07:00:00Z | 1923-05-13 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Nipigon | 1923-05-13T07:00:00Z | 1923-05-13 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Thunder_Bay | 1923-05-13T07:00:00Z | 1923-05-13 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Toronto | 1923-05-13T07:00:00Z | 1923-05-13 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| Canada/Eastern | 1923-05-13T07:00:00Z | 1923-05-13 03:00:00 | -05:00 → -04:00 | EDT | Yes | gap |
| America/Boise | 1923-05-13T10:00:00Z | 1923-05-13 03:00:00 | -08:00 → -07:00 | MST | No | gap |
| Europe/Monaco | 1923-05-26T23:00:00Z | 1923-05-27 00:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Europe/Paris | 1923-05-26T23:00:00Z | 1923-05-27 00:00:00 | +00:00 → +01:00 | WEST | Yes | gap |
| Europe/Amsterdam | 1923-06-01T01:40:28Z | 1923-06-01 03:00:00 | +00:19:32 → +01:19:32 | NST | Yes | gap |
| Africa/Accra | 1923-09-01T02:00:00Z | 1923-09-01 02:20:00 | +00:00 → +00:20 | +0020 | Yes | gap |
| America/Halifax | 1923-09-04T03:00:00Z | 1923-09-03 23:00:00 | -03:00 → -04:00 | AST | No | overlap |
| Canada/Atlantic | 1923-09-04T03:00:00Z | 1923-09-03 23:00:00 | -03:00 → -04:00 | AST | No | overlap |
| Asia/Beirut | 1923-09-15T21:00:00Z | 1923-09-15 23:00:00 | +03:00 → +02:00 | EET | No | overlap |
| Eire | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Belfast | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Dublin | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Gibraltar | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Guernsey | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Isle_of_Man | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/Jersey | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| Europe/London | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| GB | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| GB-Eire | 1923-09-16T02:00:00Z | 1923-09-16 02:00:00 | +01:00 → +00:00 | GMT | No | overlap |
| America/Montreal | 1923-09-16T06:00:00Z | 1923-09-16 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Nipigon | 1923-09-16T06:00:00Z | 1923-09-16 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Thunder_Bay | 1923-09-16T06:00:00Z | 1923-09-16 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Toronto | 1923-09-16T06:00:00Z | 1923-09-16 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| Canada/Eastern | 1923-09-16T06:00:00Z | 1923-09-16 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/New_York | 1923-09-30T06:00:00Z | 1923-09-30 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| US/Eastern | 1923-09-30T06:00:00Z | 1923-09-30 01:00:00 | -04:00 → -05:00 | EST | No | overlap |
| America/Chicago | 1923-09-30T07:00:00Z | 1923-09-30 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| US/Central | 1923-09-30T07:00:00Z | 1923-09-30 01:00:00 | -05:00 → -06:00 | CST | No | overlap |
| America/Edmonton | 1923-09-30T08:00:00Z | 1923-09-30 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Yellowknife | 1923-09-30T08:00:00Z | 1923-09-30 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| Canada/Mountain | 1923-09-30T08:00:00Z | 1923-09-30 01:00:00 | -06:00 → -07:00 | MST | No | overlap |
| America/Montevideo | 1923-10-01T04:00:00Z | 1923-10-01 01:00:00 | -04:00 → -03:00 | -03 | Yes | gap |
| Asia/Damascus | 1923-10-06T23:00:00Z | 1923-10-07 01:00:00 | +03:00 → +02:00 | EET | No | overlap |
| CET | 1923-10-06T23:00:00Z | 1923-10-06 23:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Europe/Brussels | 1923-10-06T23:00:00Z | 1923-10-06 23:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Europe/Monaco | 1923-10-06T23:00:00Z | 1923-10-06 23:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Europe/Paris | 1923-10-06T23:00:00Z | 1923-10-06 23:00:00 | +01:00 → +00:00 | WET | No | overlap |
| MET | 1923-10-06T23:00:00Z | 1923-10-06 23:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Europe/Luxembourg | 1923-10-07T01:00:00Z | 1923-10-07 01:00:00 | +01:00 → +00:00 | WET | No | overlap |
| Europe/Amsterdam | 1923-10-07T01:40:28Z | 1923-10-07 02:00:00 | +01:19:32 → +00:19:32 | AMT | No | overlap |
| America/Belize | 1923-10-07T06:00:00Z | 1923-10-07 00:30:00 | -06:00 → -05:30 | -0530 | Yes | gap |
| America/St_Johns | 1923-10-29T01:30:52Z | 1923-10-28 22:00:00 | -02:30:52 → -03:30:52 | NST | No | overlap |
| Canada/Newfoundland | 1923-10-29T01:30:52Z | 1923-10-28 22:00:00 | -02:30:52 → -03:30:52 | NST | No | overlap |
| Asia/Jakarta | 1923-12-31T16:40:00Z | 1924-01-01 00:00:00 | +07:07:12 → +07:20 | +0720 | No | gap |