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  2. tz database - Wikipedia

    en.wikipedia.org/wiki/Tz_database

    The tz database is a collaborative compilation of information about the world's time zones and rules for observing daylight saving time, primarily intended for use with computer programs and operating systems. [2] Paul Eggert has been its editor and maintainer since 2005, [3] with the organizational backing of ICANN. [4]

  3. List of tz database time zones - Wikipedia

    en.wikipedia.org/wiki/List_of_tz_database_time_zones

    List of tz database time zones. The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2024b of the tz database. [2]

  4. List of UTC offsets - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_offsets

    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. The main purpose of this page is to list the current standard time offsets ...

  5. UTC offset - Wikipedia

    en.wikipedia.org/wiki/UTC_offset

    UTC offset. The UTC offset is the difference in hours and minutes between Coordinated Universal Time (UTC) and local solar time, at a particular place. This difference is expressed with respect to UTC and is generally shown in the format ± [hh]: [mm], ± [hh] [mm], or ± [hh]. So if the time being described is two hours ahead of UTC (such as ...

  6. 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.

  7. 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] The standard provides a well-defined ...

  8. Epoch (computing) - Wikipedia

    en.wikipedia.org/wiki/Epoch_(computing)

    Epoch (computing) In computing, an epoch is a fixed date and time used as a reference from which a computer measures system time. Most computer systems determine time as a number representing the seconds removed from a particular arbitrary date and time. For instance, Unix and POSIX measure time as the number of seconds that have passed since ...

  9. Template:Current hour offset in time zone - Wikipedia

    en.wikipedia.org/wiki/Template:Current_hour...

    Contents. Template:Current hour offset in time zone. This template gives the current hour offset from UTC time for the given time zone. If the dst parameter is not used, it uses {{ Daylight saving in time zone }} to automatically adjust the offset according to daylight saving time (DST), if applicable. This template can be used in conjunction ...