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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]
For dst rules that specify local event times, the timestamp is the sum of: timestamp = current year + dst_month + dst_day + dst_time (all in seconds) local time Adjust local time to UTC by subtracting utc_offset: timestamp = timestamp - utc_offset (in seconds) For dst_end timestamp, subtract an hour for DST timestamp = timestamp - 3600 (in ...
The main purpose of this page is to list the current standard time offsets of different countries, territories and regions. Information on daylight saving time or historical changes in offsets can be found in the individual offset articles (e.g. UTC+01:00) or the country-specific time articles (e.g. Time in Russia).
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. The UTC offsets are based on the current or upcoming database rules.
At 18:36:57 UTC on Wednesday, 17 October 1973, the first appearance of the date in ISO 8601 format [b] (1973-10-17) within the digits of Unix time (119731017) took place. At 01:46:40 UTC on Sunday, 9 September 2001, the Unix billennium (Unix time number 1 000 000 000) was celebrated. [40] The name billennium is a portmanteau of billion and ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 4 February 2025. Primary time standard "UTC" redirects here. For the time zone between UTC−1 and UTC+1, see UTC+00:00. For other uses, see UTC (disambiguation). It has been suggested that UTC offset be merged into this article. (Discuss) Proposed since December 2024. Current time zones Coordinated ...
This template prints the current UTC time offset by (UsualDifferenceFromUTCForThisLocation + DSTAdjustment) hours. Syntax: {{CurrentTimeIn ...
UTC is calculated by the International Bureau of Weights and Measures (BIPM) [2] using weighted averages of the various times as reported by these 70+ listed timing centers. [3] [4] BIPM lists the time differences between the UTC timing centers in a monthly publication called Circular T, which contains the most up to date list of contributors ...