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 was decided that India had two time zones: Calcutta (now Kolkata) would use the 90th meridian east and Bombay (now Mumbai) the 75th meridian east. It was determined as 5 hours, 53 minutes and 20 seconds ahead of Greenwich Mean Time(UTC+5:53:20). Even when Indian Standard Time (IST) was adopted on 1 January 1906, Calcutta Time remained in effect until 1948 when it was abandoned in favour of IST.

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 was decided that India had two time zones: Calcutta (now Kolkata) would use the 90th meridian east and Bombay (now Mumbai) the 75th meridian east. It was determined as 5 hours, 53 minutes and 20 seconds ahead of Greenwich Mean Time(UTC+5:53:20). Even when Indian Standard Time (IST) was adopted on 1 January 1906, Calcutta Time remained in effect until 1948 when it was abandoned in favour of IST.