India Standard Time ( IST ) is 5:30 hours (5 hours 30 minutes) ahead of Greenwich Mean Time (GMT+5.5

Indian Standard Time

Indian Standard Time (IST) is the time observed throughout India and Sri Lanka, with a time offset of UTC+05:30.

India does not observe daylight saving time (DST) or other seasonal adjustments.

In military and aviation time IST is designated E* ("Echo-Star")

Indian Standard Time is calculated on the basis of 82.5° E longitude, in Shankargarh Fort, Mirzapur (25.15°N 82.58°E) (in Allahabad district in the state of Uttar Pradesh) which is nearly on the corresponding longitude reference line.

In the tz database it is represented by Asia/Kolkata.

India Local Time Details

Time Zone India Time - is abbreviated as IST (India Standard Time)
Abbreviations

UTC – GMT--India is GMT/UTC + 5:30h during Standard Time
Offset

Daylight Saving- India does not utilize daylight saving time.
Time Usage