Indian 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
IST	UTC+05:30
Current time
19:22, 26 March 2025 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]