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00:00 1 January 2011 (UTC) is changed to 7:00 pm, 31 December 2010, Friday (1 month, 2 days ago) (UTC-5). The date is shown in your local time, based on your computer's timezone setting. The display is highly customizable through the use of options.
The UTC offsets are based on the current or upcoming database rules. This table does not attempt to document any of the historical data which resides in the database. In Ireland , what Irish law designates as "standard time" is observed during the summer, with clocks turned one hour ahead of UTC.
System time is measured by a system clock, which is typically implemented as a simple count of the number of ticks that have transpired since some arbitrary starting date, called the epoch. For example, Unix and POSIX -compliant systems encode system time (" Unix time ") as the number of seconds elapsed since the start of the Unix epoch at 1 ...
The tz reference code and database is maintained by a group of volunteers. Arthur David Olson makes most of the changes to the tz reference code. Paul Eggert makes most of the changes to the tz database. Proposed changes are sent to the tz mailing list, which is gatewayed to the comp.time.tz Usenet newsgroup. Source files are distributed via ...
In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 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 ...
|utc offset= eliminates the need to calculate UTC time from local time if the UTC offset of the local time is known. For example, Phoenix, Arizona is in Mountain Time Zone or UTC−07:00. An event that occurs a noon local time in Phoenix occurs at 7pm UTC. Countdown to 6 December 2024 12am local time in Phoenix
Using a signed 64-bit value introduces a new wraparound date that is over twenty times greater than the estimated age of the universe: approximately 292 billion years from now. [11] The ability to make computations on dates is limited by the fact that tm_year uses a signed 32-bit integer value starting at 1900 for the year. This limits the year ...