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  2. Time in India - Wikipedia

    en.wikipedia.org/wiki/Time_in_India

    In 1802 Madras Time was set up by John Goldingham [7] and this was later used widely by the railways in India. [8] Local time zones were also set up in the important cities of Bombay and Calcutta and as Madras time was intermediate to these, it was one of the early contenders for an Indian standard time zone.

  3. Indian Standard Time - Wikipedia

    en.wikipedia.org/wiki/Indian_Standard_Time

    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]

  4. Daylight saving time by country - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time_by...

    The shift is the amount of time added at the DST start time and subtracted at the DST end time. For example, in Canada and the United States, when DST starts, the local time changes from 02:00 to 03:00, and when DST ends, the local time changes from 02:00 to 01:00. As the time change depends on the time zone, it does not occur simultaneously in ...

  5. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    National standard format is yyyy-mm-dd. [161] dd.mm.yyyy format is used in some places where it is required by EU regulations, for example for best-before dates on food [162] and on driver's licenses. d/m format is used casually, when the year is obvious from the context, and for date ranges, e.g. 28-31/8 for 28–31 August.

  6. UTC+05:30 - Wikipedia

    en.wikipedia.org/wiki/UTC+05:30

    UTC+5:30 is an identifier for a time offset from UTC of +05:30. This time is used in India [1] and Sri Lanka, [2] and was formerly used in Nepal, Pakistan and Bangladesh. [3] It is five and a half hours ahead of Coordinated Universal Time. Around 1.4 billion people live inside this time zone, making it the second-most populous after UTC+08:00. [4]

  7. List of UTC offsets - Wikipedia

    en.wikipedia.org/wiki/List_of_UTC_offsets

    If present, a dagger (†) indicates the usage of a nautical time zone letter outside of the standard geographic definition of that time zone. Some zones that are north/south of each other in the mid-Pacific differ by 24 hours in time – they have the same time of day but dates that are one day apart. The two extreme time zones on Earth (both ...

  8. Date and time notation in India - Wikipedia

    en.wikipedia.org/.../Date_and_time_notation_in_India

    In India, the DD-MM-YYYY and DD/MM/YYYY are the two predominant short form representations of the date in the Gregorian calendar. The hyphen (-) and oblique (/) are both used as separator between the date fields. Almost all government documents need to be filled up in the DD-MM-YYYY or DD/MM/YYYY format.

  9. 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.