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Standard Time (SDT) and Daylight Saving Time (DST) offsets from UTC in hours and minutes. For zones in which Daylight Saving is not observed, the DST offset shown in this table is a simple duplication of the SDT offset.
Monday, December 30, 1844, was immediately followed by Wednesday, January 1, 1845, which added 1 day or 24 hours to the local time. This change meant that the International Date Line moved from going west of the Philippines to go on the east side of the country, which had to follow the eastern hemisphere to align itself with the rest of Asia .
This is a list of the UTC time offsets, showing the difference in hours and minutes from Coordinated Universal Time (UTC), from the westernmost (−12:00) to the easternmost (+14:00). It includes countries and regions that observe them during standard time or year-round.
Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+08:00), Cuba Standard Time (UTC−05:00), and (North American) Central Standard Time (UTC−06:00), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in ...
Time zones of the world. A time zone is an area which observes a uniform standard time for legal, commercial and social purposes. Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time.
UTC−07:00 – Mountain Time zone: most of Idaho, part of Oregon, and the Mountain states plus western parts of some adjacent states UTC−06:00 ( CT ) – Central Time zone : a large area spanning from the Gulf Coast to the Great Lakes
utc−10:00 When dst is NOT set to "no", the *T, *ST and *DT variants of a particular time zone will produce the same output and can be used interchangeably. Otherwise (when using dst=no ), *T and *ST will produce the offset without DST adjustment, and *DT will produce the offset with DST adjustment.
Philippines: PHT/PST: First implemented on 1 January 1845 by redrawing the International Date Line. [note 1] [11] [12] It became permanent on 29 July 1990 when the country ended the use of daylight saving time, then set at UTC+09:00. [13] Philippine Standard Time: ASEAN observer states Timor-Leste +09:00: TLT: Time in Timor-Leste Papua New ...