Time Zone Changes in 1900
In 1900, 40 time zone transitions occurred across 40 regions worldwide. Clocks moved forward in 20 transitions (gaps) and turned back in 18 transitions (overlaps).
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Transitions in 1900 (40)
| Zone | Instant (UTC) | Local Wall Time | Shift | Abbreviation | DST | Effect |
|---|---|---|---|---|---|---|
| America/Whitehorse | 1900-08-20T09:00:12Z | 1900-08-20 00:00:12 | -09:00:12 → -09:00 | YST | No | gap |
| Canada/Yukon | 1900-08-20T09:00:12Z | 1900-08-20 00:00:12 | -09:00:12 → -09:00 | YST | No | gap |
| America/Dawson | 1900-08-20T09:17:40Z | 1900-08-20 00:17:40 | -09:17:40 → -09:00 | YST | No | gap |
| America/Metlakatla | 1900-08-20T20:46:18Z | 1900-08-20 12:46:18 | -08:46:18 → -08:00 | PST | No | gap |
| America/Juneau | 1900-08-20T20:57:41Z | 1900-08-20 12:57:41 | -08:57:41 → -08:00 | PST | No | gap |
| America/Sitka | 1900-08-20T21:01:13Z | 1900-08-20 13:01:13 | -09:01:13 → -08:00 | PST | No | gap |
| America/Yakutat | 1900-08-20T21:18:55Z | 1900-08-20 12:18:55 | -09:18:55 → -09:00 | YST | No | gap |
| America/Anchorage | 1900-08-20T21:59:36Z | 1900-08-20 11:59:36 | -09:59:36 → -10:00 | AST | No | overlap |
| US/Alaska | 1900-08-20T21:59:36Z | 1900-08-20 11:59:36 | -09:59:36 → -10:00 | AST | No | overlap |
| America/Nome | 1900-08-20T23:01:38Z | 1900-08-20 12:01:38 | -11:01:38 → -11:00 | NST | No | gap |
| America/Adak | 1900-08-20T23:46:38Z | 1900-08-20 12:46:38 | -11:46:38 → -11:00 | NST | No | gap |
| America/Atka | 1900-08-20T23:46:38Z | 1900-08-20 12:46:38 | -11:46:38 → -11:00 | NST | No | gap |
| US/Aleutian | 1900-08-20T23:46:38Z | 1900-08-20 12:46:38 | -11:46:38 → -11:00 | NST | No | gap |
| Asia/Hebron | 1900-09-30T21:39:37Z | 1900-09-30 23:39:37 | +02:20:23 → +02:00 | EET | No | overlap |
| Asia/Gaza | 1900-09-30T21:42:08Z | 1900-09-30 23:42:08 | +02:17:52 → +02:00 | EET | No | overlap |
| Africa/Cairo | 1900-09-30T21:54:51Z | 1900-09-30 23:54:51 | +02:05:09 → +02:00 | EET | No | overlap |
| Egypt | 1900-09-30T21:54:51Z | 1900-09-30 23:54:51 | +02:05:09 → +02:00 | EET | No | overlap |
| Pacific/Wallis | 1900-12-31T11:44:40Z | 1900-12-31 23:44:40 | +12:15:20 → +12:00 | +12 | No | overlap |
| Pacific/Funafuti | 1900-12-31T12:03:08Z | 1901-01-01 00:03:08 | +11:56:52 → +12:00 | +12 | No | gap |
| Pacific/Tarawa | 1900-12-31T12:27:56Z | 1901-01-01 00:27:56 | +11:32:04 → +12:00 | +12 | No | gap |
| Pacific/Majuro | 1900-12-31T12:35:12Z | 1900-12-31 23:35:12 | +11:24:48 → +11:00 | +11 | No | overlap |
| Pacific/Norfolk | 1900-12-31T12:48:08Z | 1901-01-01 00:00:08 | +11:11:52 → +11:12 | +1112 | No | gap |
| Kwajalein | 1900-12-31T12:50:40Z | 1900-12-31 23:50:40 | +11:09:20 → +11:00 | +11 | No | overlap |
| Pacific/Kwajalein | 1900-12-31T12:50:40Z | 1900-12-31 23:50:40 | +11:09:20 → +11:00 | +11 | No | overlap |
| Pacific/Wake | 1900-12-31T12:53:32Z | 1901-01-01 00:53:32 | +11:06:28 → +12:00 | +12 | No | gap |
| Pacific/Kosrae | 1900-12-31T13:08:04Z | 1901-01-01 00:08:04 | +10:51:56 → +11:00 | +11 | No | gap |
| Pacific/Pohnpei | 1900-12-31T13:27:08Z | 1901-01-01 00:27:08 | +10:32:52 → +11:00 | +11 | No | gap |
| Pacific/Chuuk | 1900-12-31T13:52:52Z | 1900-12-31 23:52:52 | +10:07:08 → +10:00 | +10 | No | overlap |
| Pacific/Saipan | 1900-12-31T14:17:00Z | 1900-12-31 23:17:00 | +09:43 → +09:00 | +09 | No | overlap |
| Pacific/Guam | 1900-12-31T14:21:00Z | 1901-01-01 00:21:00 | +09:39 → +10:00 | GST | No | gap |
| Pacific/Palau | 1900-12-31T15:02:04Z | 1901-01-01 00:02:04 | +08:57:56 → +09:00 | +09 | No | gap |
| Asia/Chongqing | 1900-12-31T15:54:17Z | 1900-12-31 23:54:17 | +08:05:43 → +08:00 | CST | No | overlap |
| Asia/Chungking | 1900-12-31T15:54:17Z | 1900-12-31 23:54:17 | +08:05:43 → +08:00 | CST | No | overlap |
| Asia/Harbin | 1900-12-31T15:54:17Z | 1900-12-31 23:54:17 | +08:05:43 → +08:00 | CST | No | overlap |
| Asia/Shanghai | 1900-12-31T15:54:17Z | 1900-12-31 23:54:17 | +08:05:43 → +08:00 | CST | No | overlap |
| PRC | 1900-12-31T15:54:17Z | 1900-12-31 23:54:17 | +08:05:43 → +08:00 | CST | No | overlap |
| Asia/Singapore | 1900-12-31T17:04:35Z | 1901-01-01 00:00:00 | +06:55:25 → +06:55:25 | SMT | No | offset-only |
| Singapore | 1900-12-31T17:04:35Z | 1901-01-01 00:00:00 | +06:55:25 → +06:55:25 | SMT | No | offset-only |
| Asia/Kuala_Lumpur | 1900-12-31T17:13:14Z | 1901-01-01 00:08:39 | +06:46:46 → +06:55:25 | SMT | No | gap |
| Europe/Andorra | 1900-12-31T23:53:56Z | 1900-12-31 23:53:56 | +00:06:04 → +00:00 | WET | No | overlap |