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Asia/Kolkata

Asia/Kolkata is the IANA time zone for India.

UTC+05:30

Tue, Sep 29 UTC+5:30 IST

Offsets and daylight saving time

Standard offset
UTC+05:30
Rule
No daylight saving time: UTC+5:30 all year.

No clock changes are scheduled in the next three years.

Names

Generic name
India Standard Time
Abbreviation
IST
Long name
India Standard Time
Aliases
Asia/Calcutta (old ids that resolve to Asia/Kolkata)

Use it in code

// JavaScript
new Intl.DateTimeFormat('en-US', { timeZone: 'Asia/Kolkata' })

# Python
from zoneinfo import ZoneInfo
ZoneInfo('Asia/Kolkata')

-- PostgreSQL
SELECT now() AT TIME ZONE 'Asia/Kolkata';

Cities in Asia/Kolkata

Offset history since 1970

  • 1970–2026: UTC+5:30

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