Indian Standard Time
time zone, observed in India and Sri Lanka; UTC+05:30
|Indian Standard Time|
|02:00, 19 September 2023 IST|
|Observance of DST|
|DST is not observed in this time zone.|
History in Sri Lanka Edit
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.