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Calcutta Time

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Title: Calcutta Time  
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Subject: Indian Standard Time, Kolkata, Bangladesh Standard Time
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Calcutta Time

Calcutta time was one of the two time zones established in British India in 1884. It was established during the International Meridian Conference held at Washington, D.C in the United States. It had decided that India has two time zones, which it has providing Calcutta (now Kolkata) would use the 90th meridian east and Bombay (Mumbai) the 75th meridian east.

Calcutta Time was described as being twenty-four minutes ahead of Indian standard time and one hour and three minutes ahead of Bombay standard time.[1] (UTC+5:54) It has also been described as 32 minutes and 20 seconds ahead of Madras time. (UTC+5:53:20)[2] Even when Indian Standard Time (IST) was adopted on 1 January 1906, Calcutta time remained in effect until 1948 when Calcutta time was abandoned in favour of IST.[3]

In the latter part of the nineteenth century, Calcutta time was the dominant time of the Indian part of the British empire with records of astronomical and geological events recorded in this time.[4][5] Willian Strachey, an uncle of [6][7] James Clavell, in his novel King Rat, refers to news broadcasts as occurring in "Calcutta time".[8]

See also


  1. ^
  2. ^
  3. ^
  4. ^ Report of the Great Earthquake of 12 June 1897 - Richard Dixon Oldham - Google Books
  5. ^ The Asiatic Journal and Monthly Register for British and Foreign India ... - Google Books
  6. ^
  7. ^
  8. ^

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