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  2. List of tz database time zones - Wikipedia

    en.wikipedia.org/wiki/List_of_tz_database_time_zones

    Time zone abbreviations for both Standard Time and Daylight Saving Time are shown exactly as they appear in the database. See strftime and its "%Z" field. Some of zone records use 3 or 4 letter abbreviations that are tied to physical time zones, others use numeric UTC offsets.

  3. List of UTC offsets - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_offsets

    The purpose of the "principal cities" list at the top of some of the time zone entries is to give a brief list of major cities. These should be limited to a maximum of one city per country (within each zone), and not all countries in a zone need to have a city listed.

  4. tz database - Wikipedia

    en.wikipedia.org/wiki/Tz_database

    Each zone line for a zone specifies, for a range of date and time, the offset to UTC for standard time, the name of the set of rules that govern daylight saving time (or a hyphen if standard time always applies), the format for time zone abbreviations, and, for all but the last zone line, the date and time at which the range of date and time ...

  5. 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

  6. ISO 8601 - Wikipedia

    en.wikipedia.org/wiki/ISO_8601

    ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data.It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. [1]

  7. List of time zone abbreviations - Wikipedia

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

    Abbr. Name UTC offset ; ACDT: Australian Central Daylight Saving Time: UTC+10:30: ACST: Australian Central Standard Time: UTC+09:30: ACT: Acre Time: UTC−05:00: ACT ...

  8. UTC−04:00 - Wikipedia

    en.wikipedia.org/wiki/UTC%E2%88%9204:00

    UTC−04:00 is an identifier for a time offset from UTC of −04:00.. It is observed in the Eastern Time Zone (e.g., in Canada and the United States) during the warm months of daylight saving time, as Eastern Daylight Time.

  9. List of date formats by country - Wikipedia

    en.wikipedia.org/.../List_of_date_formats_by_country

    Country All-numeric date format Details Official standard YMD DMY MDY Afghanistan: Yes: Yes: No: Short format: d/m/yyyy (Year first, month, and day in right-to-left writing direction) Long format: yyyy mmmm d (Day first, full month name, and year in right-to-left writing direction) Åland: Yes: Yes: No: Short format: yyyy-mm-dd Long format: d ...