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The Indian Standard Time was adopted on 1 January 1906 during the British era with the phasing out of its precursor Madras Time (Railway Time), [2] and after Independence in 1947, the Union government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Calcutta Time and Bombay Time) until 1948 and 1955, respectively. [3]
Toggle As standard time (Northern Hemisphere winter only) subsection. 2.1 Europe. 2.1.1 Eastern Europe. 2.2 Asia. ... Western European Time / Greenwich Mean Time : Blue:
The time 8:45 may be spoken as "eight forty-five" or "(a) quarter to nine". [20] In older English, it was common for the number 25 to be expressed as "five-and-twenty". [21] In this way the time 8:35 may be phrased as "five-and-twenty to 9", [22] although this styling fell out of fashion in the later part of the 1900s and is now rarely used. [23]
Eastern Time UTC+10:30: UTC+11:00: Lord Howe Island: UTC+11:00 is an identifier for a time offset from UTC of +11:00. This time is used in: As standard time (year-round)
This standard was known as New Zealand Mean Time (NZMT). [1] Today this would be around the same zone covered by UTC+11:30. New Zealand changed from NZMT to New Zealand Standard Time (NZST) as UTC+12:00 in 1946 (after using this time zone as a daylight saving time since 1928, including permanent daylight saving from 1941). [ 2 ]
Many computer systems measure time and date using Unix time, an international standard for digital timekeeping.Unix time is defined as the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (an arbitrarily chosen time based on the creation of the first Unix system), which has been dubbed the Unix epoch.
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]
Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time.