IST to I Converter
Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
IST and I examples
These examples always use IST (UTC+5:30) and I (UTC+9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
IST is 3 hours and 30 minutes behind I.
How the time difference changes
IST is 3 hours and 30 minutes behind I year-round.
Working hours of 9:00 am to 5:00 pm in IST correspond to 12:30 pm to 8:30 pm in I.
Compare IST time with I time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
India Standard Time is 3 hours and 30 minutes behind India Time Zone
5:30 pm17:30 in IST is 9:00 pm21:00 in I
IST to I call time
Best time for a conference call or a meeting is between 9am-1:30pm in IST which corresponds to 12:30pm-5pm in I
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 pm21:00 India Time Zone (I). Offset UTC +9:00 hours
5:30 pm17:30 IST / 9:00 pm21:00 I
| IST | I |
|---|---|
| 12am (midnight) | 3:30 am |
| 1am | 4:30 am |
| 2am | 5:30 am |
| 3am | 6:30 am |
| 4am | 7:30 am |
| 5am | 8:30 am |
| 6am | 9:30 am |
| 7am | 10:30 am |
| 8am | 11:30 am |
| 9am | 12:30 pm |
| 10am | 1:30 pm |
| 11am | 2:30 pm |
| 12pm (noon) | 3:30 pm |
| 1pm | 4:30 pm |
| 2pm | 5:30 pm |
| 3pm | 6:30 pm |
| 4pm | 7:30 pm |
| 5pm | 8:30 pm |
| 6pm | 9:30 pm |
| 7pm | 10:30 pm |
| 8pm | 11:30 pm |
| 9pm | 12:30 am |
| 10pm | 1:30 am |
| 11pm | 2:30 am |
| 00:00 | 03:30 |
| 01:00 | 04:30 |
| 02:00 | 05:30 |
| 03:00 | 06:30 |
| 04:00 | 07:30 |
| 05:00 | 08:30 |
| 06:00 | 09:30 |
| 07:00 | 10:30 |
| 08:00 | 11:30 |
| 09:00 | 12:30 |
| 10:00 | 13:30 |
| 11:00 | 14:30 |
| 12:00 | 15:30 |
| 13:00 | 16:30 |
| 14:00 | 17:30 |
| 15:00 | 18:30 |
| 16:00 | 19:30 |
| 17:00 | 20:30 |
| 18:00 | 21:30 |
| 19:00 | 22:30 |
| 20:00 | 23:30 |
| 21:00 | 00:30 |
| 22:00 | 01:30 |
| 23:00 | 02:30 |
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: India
Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bangalore, Chennai, Kolkata.
Daylight Saving: Clocks in India Standard Time (IST) do not change for daylight saving time, so IST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates an offset of five hours and thirty minutes to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
India Time Zone
Offset: I is 9 hours ahead Greenwich Mean Time (GMT) and is used in Military
Daylight Saving: Clocks in India Time Zone (I) do not change for daylight saving time, so I stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
I representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for I
- I - short form of 'India'
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time