IST: India Standard Time
IST stands for India Standard Time. It is UTC+5:30, 5 hours 30 minutes ahead of UTC.
India Standard Time covers the whole country with one offset, UTC+5:30, and it never changes, because India does not use daylight saving time. Sri Lanka uses the same offset.
IST can also mean Irish Standard Time or Israel Standard Time, so add the country when you write a time for an international reader.
IST UTC+5:30
IST has more than one meaning. It can also mean Irish Summer Time (UTC+1). When it matters, write the city or the UTC offset instead.
Daylight saving time and IST
IST has no daylight saving version: places on it keep the same time all year.
Where IST is used
| City | When | Right now |
|---|---|---|
| New Delhi India | All year |
Convert IST to other time zones
IST is a fixed offset, so these conversions are the same on every date. Use the last column to convert any time.
| Time zone | 09:00 IST | 12:00 IST | 17:00 IST | |
|---|---|---|---|---|
| Your local time | ||||
| UTC Coordinated Universal Time · UTC+0 | 03:30 | 06:30 | 11:30 | |
| HST Hawaii Standard Time · UTC−10 | 17:30 −1 day | 20:30 −1 day | 01:30 | |
| PST Pacific Standard Time · UTC−8 | 19:30 −1 day | 22:30 −1 day | 03:30 | |
| MST Mountain Standard Time · UTC−7 | 20:30 −1 day | 23:30 −1 day | 04:30 | |
| CST Central Standard Time · UTC−6 | 21:30 −1 day | 00:30 | 05:30 | |
| EST Eastern Standard Time · UTC−5 | 22:30 −1 day | 01:30 | 06:30 | |
| BRT Brasília Time · UTC−3 | 00:30 | 03:30 | 08:30 | |
| GMT Greenwich Mean Time · UTC+0 | 03:30 | 06:30 | 11:30 | |
| CET Central European Time · UTC+1 | 04:30 | 07:30 | 12:30 | |
| EET Eastern European Time · UTC+2 | 05:30 | 08:30 | 13:30 | |
| GST Gulf Standard Time · UTC+4 | 07:30 | 10:30 | 15:30 | |
| ICT Indochina Time · UTC+7 | 10:30 | 13:30 | 18:30 | |
| CST China Standard Time · UTC+8 | 11:30 | 14:30 | 19:30 | |
| JST Japan Standard Time · UTC+9 | 12:30 | 15:30 | 20:30 | |
| KST Korea Standard Time · UTC+9 | 12:30 | 15:30 | 20:30 | |
| AEST Australian Eastern Standard Time · UTC+10 | 13:30 | 16:30 | 21:30 | |
| NZST New Zealand Standard Time · UTC+12 | 15:30 | 18:30 | 23:30 |
Frequently asked questions
What does IST stand for?
IST stands for India Standard Time. It is UTC+5:30, 5 hours 30 minutes ahead of UTC. The same letters are also used for Irish Summer Time (UTC+1), so check which one is meant.
How do I convert IST to UTC?
Subtract 5 hours 30 minutes. For example, 12:00 IST is 06:30 UTC.
Which cities use IST?
New Delhi uses IST.
Other time zone abbreviations
Why abbreviations cause mistakes, and safer ways to write a time: EST, CST, IST: why time zone abbreviations confuse.