Indian Standard Time

time zone, observed in India and Sri Lanka; UTC+05:30
(Redirected from Sri Lanka Standard Time)

Indian Standard Time (IST) is the time zone for India and Sri Lanka. It is 5 hours and 30 minutes forward to Coordinated Universal Time (UTC+5:30). It does not use Daylight Saving Time (DST).

Indian Standard Time
time zone
  Indian Standard Time
UTC offset
Current time
13:53, 17 June 2024 IST [refresh]
Observance of DST
DST is not observed in this time zone.

History in Sri Lanka


On 15 April 2006, Sri Lanka Time went back to match Indian Standard Time calculated from the Allahabad Observatory in India 82.5° longitude east of Greenwich, the calculation place for GMT. This time zone is used fully by Sri Lanka.

Since 1880, the time zone in Sri Lanka (also known as Ceylon up to 1972) has changed from UTC+05:30 to UTC+06:30.[1][2]


  1. "Time to end Sri Lanka time split?". 3 April 2006. Retrieved 22 October 2021.
  2. "Clarke in protest at Sri Lanka time zone switch". The Telegraph. Retrieved 11 October 2014.

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