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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]
Shows the difference in terms of days, months, and years from the timestamp and today's date. Options: true to show the difference between the timestamp and today's date, and false to hide the difference dateFormat Changes the date's format. Options: 'dmy' for "1 January 2009", 'mdy' for "January 1, 2009", and 'ymd' for "2009-01-01" dayOfWeek
A signed 32-bit value covers about 68 years before and after the 1970-01-01 epoch. The minimum representable date is Friday 1901-12-13, and the maximum representable date is Tuesday 2038-01-19. One second after 2038-01-19T03:14:07Z this representation will overflow in what is known as the year 2038 problem.
The moment of epoch is usually decided by congruity, or by following conventions understood from the epoch in question. The epoch moment or date is usually defined from a specific, clear event of change, an epoch event. In a more gradual change, a deciding moment is chosen when the epoch criterion was reached. [clarification needed] [citation ...
For each timezone that has multiple offsets (usually due to daylight saving time), the tz database records the exact moment of transition. The format can accommodate changes in the dates and times of transitions as well. Zones may have historical rule changes going back many decades (as shown in the example above).
Thus, midnight is 0.0 day, noon is 0.5 d, etc., which can be added to any type of date, including (all of which refer to the same moment): Gregorian dates: 2000 January 1.5; Two-line elements: 00001.50000000; Julian dates: 2451545.0; Excel serial dates: 36526.5; As many decimal places may be used as required for precision, so 0.5 d = 0.500000 d.
Converts dates into a format used on Wikipedia Template parameters [Edit template data] Parameter Description Type Status date 1 Date to be formatted Example Jan 1, 2007 Date suggested format 2 Controls the date format for the result Default DMY Example MDY String suggested The above documentation is transcluded from Template:Date/doc. (edit | history) Editors can experiment in this template's ...
This time format was proposed by the Swedish-American engineer John W. Nystrom in 1863 as part of his tonal system. [1] In 1997, the American Mark Vincent Rogers of Intuitor proposed a similar system of hexadecimal time and implemented it in JavaScript as the Hexclock. [2]