IST Time Now — India Standard Time
The current IST time (India Standard Time, UTC +05:30) is shown below. India Standard Time is the time zone observed throughout India, with a UTC offset of +05:30.
IST — UTC +05:30
Thursday, 22 October 2026 IST
Where IST is used
In 2026, 2 zones in the tz database show IST , all of them all year round.
| Zone | Country | January | July |
|---|---|---|---|
| Asia/Calcutta | India | IST +05:30 | IST +05:30 |
| Asia/Colombo | Sri Lanka | IST +05:30 | IST +05:30 |
About IST
Offset & DST
UTC offset: +05:30
Daylight saving: Not observed
Representative IANA zone: Asia/Kolkata
IANA zones at IST
Converting IST to other time zones
IST is fixed at UTC +05:30 — written +0530 in email headers and +05:30 in ISO 8601 timestamps. The table below uses each abbreviation's own fixed offset; for a specific place, check its city page, since local clocks switch between standard and daylight abbreviations.
| Zone | Difference | When it's 12:00 IST | Converter |
|---|---|---|---|
| UTC Coordinated Universal Time | −5:30 h | 06:30 | Hour by hour → |
| PST Pacific Standard Time | −13:30 h | 22:30 (−1 day) | Hour by hour → |
| MST Mountain Standard Time | −12:30 h | 23:30 (−1 day) | Hour by hour → |
| CST Central Standard Time | −11:30 h | 00:30 | Hour by hour → |
| EST Eastern Standard Time | −10:30 h | 01:30 | Hour by hour → |
| BRT Brasília Time | −8:30 h | 03:30 | Hour by hour → |
| BST British Summer Time | −4:30 h | 07:30 | Hour by hour → |
| CET Central European Time | −4:30 h | 07:30 | Hour by hour → |
| EET Eastern European Time | −3:30 h | 08:30 | Hour by hour → |
| MSK Moscow Standard Time | −2:30 h | 09:30 | Hour by hour → |
| GST Gulf Standard Time | −1:30 h | 10:30 | Hour by hour → |
| CST China Standard Time | +2:30 h | 14:30 | Hour by hour → |
| JST Japan Standard Time | +3:30 h | 15:30 | Hour by hour → |
| AEST Australian Eastern Standard Time | +4:30 h | 16:30 | Hour by hour → |
IST can mean something else
Time zone abbreviations are not unique. Besides India Standard Time, IST is also used for:
- Irish Standard Time (UTC +01:00) — Ireland's legal name for its summer time
- Israel Standard Time (UTC +02:00) — Israel, in winter
When the difference matters — meeting invites, software, contracts — write the UTC offset (UTC +05:30) or an IANA zone name such as Asia/Kolkata instead.
Countries commonly using IST
IST questions
- What is IST in UTC?
- IST (India Standard Time) is UTC +05:30. In ISO 8601 timestamps it is written +05:30, in email and HTTP headers +0530.
- Which countries use IST?
- In 2026, zones showing IST are found in India, Sri Lanka.
- Does IST mean anything else?
- Yes. IST is also used for Irish Standard Time (UTC +01:00) and Israel Standard Time (UTC +02:00). Use a UTC offset or an IANA zone name when it matters.
More tools for IST
Look up the exact IANA zone behind IST, see it on the offset map, or compare it against other cities.