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  2. List of time zone abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_time_zone...

    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 ...

  3. Sri Lanka Standard Time - Wikipedia

    en.wikipedia.org/wiki/Sri_Lanka_Standard_Time

    However, Tamil Tiger-controlled areas observed a time zone of UTC+05:30. [3] On April 15. 2006, the government changed the official time to UTC+05:30. By doing so, Sri Lanka aimed to align its time zone with that of India. English writer Sir Arthur C. Clarke, who was then staying in Sri Lanka, protested against the switch, arguing that it would ...

  4. Time in Sri Lanka - Wikipedia

    en.wikipedia.org/wiki/Time_in_Sri_Lanka

    Time in Sri Lanka since 15 April 2006 is officially represented by the Sri Lanka Standard Time (SLST, UTC+05:30 ... one zone for Sri Lanka in the file zone.tab, named ...

  5. Time zone - Wikipedia

    en.wikipedia.org/wiki/Time_zone

    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.

  6. List of time zones by country - Wikipedia

    en.wikipedia.org/wiki/List_of_time_zones_by_country

    UTC−08:00 – Pacific Time zone: the Pacific coast states, the Idaho Panhandle and most of Nevada and Oregon 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 – Central Time zone: a large area spanning from the Gulf Coast to the Great Lakes

  7. List of UTC offsets - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_offsets

    If present, a dagger (†) indicates the usage of a nautical time zone letter outside of the standard geographic definition of that time zone. Some zones that are north/south of each other in the mid-Pacific differ by 24 hours in time – they have the same time of day but dates that are one day apart. The two extreme time zones on Earth (both ...

  8. Daylight saving time by country - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_by...

    The shift is the amount of time added at the DST start time and subtracted at the DST end time. For example, in Canada and the United States, when DST starts, the local time changes from 02:00 to 03:00, and when DST ends, the local time changes from 02:00 to 01:00. As the time change depends on the time zone, it does not occur simultaneously in ...

  9. Central Time Zone - Wikipedia

    en.wikipedia.org/wiki/Central_Time_Zone

    The North American Central Time Zone (CT) is a time zone in parts of Canada, the United States, Mexico, Central America, and a few Caribbean islands. [1]In parts of that zone (20 states in the US, three provinces or territories in Canada, and several border municipalities in Mexico), the Central Time Zone is affected by two time designations yearly: Central Standard Time (CST) is observed from ...