The longitude of 82★'E passing through Naini near Allahabad was chosen as the standard meridian for the whole country because there is a time lag of more than an hour between western India ( around +05:00) and northeastern India ( around +06:00), hence approximately standardising with UTC+05:30 of central India. In 1905, the meridian passing east of Allahabad was declared as a standard time zone for British India and was declared as IST in 1947 for the Dominion of India. Indian Standard Time is calculated from the clock tower in Mirzapur nearly exactly on the reference longitude of IST at 82☃0'E, within four angular minutes. Former timezones Time ZoneĬalculation Location of Mirzapur (near Allahabad) and the 82☃0’ E longitude that is used as the reference longitude for IST ĭaylight Saving Time (DST) was used briefly during the China–India War of 1962 and the Indo-Pakistani Wars of 19. The Central observatory was moved from Madras to a location at Shankargarh Fort in Allahabad district, so that it would be as close to UTC+05:30 as possible. 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), 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 19, respectively.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |