IST to HAA Converter
HAA is not used on this date
This converter keeps HAA at GMT -3. Moncton uses AST (GMT -4) on this date. Open the AST converter, or choose Santo Domingo, Santiago de los Caballeros, or Santo Domingo Oeste for city-specific time.Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
IST and HAA examples
These examples always use IST (UTC+5:30) and HAA (UTC-3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
IST is 8 hours and 30 minutes ahead of HAA.
How the time difference changes
IST is 8 hours and 30 minutes ahead of HAA year-round.
Working hours of 9:00 am to 5:00 pm in IST correspond to 12:30 am to 8:30 am in HAA.
Compare IST time with HAA time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
India Standard Time is 8 hours and 30 minutes ahead of Heure Avancée de l'Atlantique
5:30 pm17:30 in IST is 9:00 am09:00 in HAA
IST to HAA call time
Best time for a conference call or a meeting is between 5pm-6pm in IST which corresponds to 8:30am-9:30am in HAA
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 am09:00 Heure Avancée de l'Atlantique (HAA). Offset UTC -3:00 hours
5:30 pm17:30 IST / 9:00 am09:00 HAA
| IST | HAA |
|---|---|
| 12am (midnight) | 3:30 pm |
| 1am | 4:30 pm |
| 2am | 5:30 pm |
| 3am | 6:30 pm |
| 4am | 7:30 pm |
| 5am | 8:30 pm |
| 6am | 9:30 pm |
| 7am | 10:30 pm |
| 8am | 11:30 pm |
| 9am | 12:30 am |
| 10am | 1:30 am |
| 11am | 2:30 am |
| 12pm (noon) | 3:30 am |
| 1pm | 4:30 am |
| 2pm | 5:30 am |
| 3pm | 6:30 am |
| 4pm | 7:30 am |
| 5pm | 8:30 am |
| 6pm | 9:30 am |
| 7pm | 10:30 am |
| 8pm | 11:30 am |
| 9pm | 12:30 pm |
| 10pm | 1:30 pm |
| 11pm | 2:30 pm |
| 00:00 | 15:30 |
| 01:00 | 16:30 |
| 02:00 | 17:30 |
| 03:00 | 18:30 |
| 04:00 | 19:30 |
| 05:00 | 20:30 |
| 06:00 | 21:30 |
| 07:00 | 22:30 |
| 08:00 | 23:30 |
| 09:00 | 00:30 |
| 10:00 | 01:30 |
| 11:00 | 02:30 |
| 12:00 | 03:30 |
| 13:00 | 04:30 |
| 14:00 | 05:30 |
| 15:00 | 06:30 |
| 16:00 | 07:30 |
| 17:00 | 08:30 |
| 18:00 | 09:30 |
| 19:00 | 10:30 |
| 20:00 | 11:30 |
| 21:00 | 12:30 |
| 22:00 | 13:30 |
| 23:00 | 14:30 |
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
Heure Avancée de l'Atlantique
Offset: HAA is 3 hours behind Greenwich Mean Time (GMT) and is used in America
Countries using this time zone: Bermuda, Canada, Greenland
Principal Cities: The largest city in the HAA time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Dartmouth, Moncton, Saint John.
Daylight Saving: Heure Avancée de l'Atlantique (HAA) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Atlantic Standard Time (AST).
End: Heure Avancée de l'Atlantique (HAA) ended on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am local standard time instead. Daylight saving ends annually on the first Sunday of November
Start: Heure Avancée de l'Atlantique (HAA) starts on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am. Daylight saving starts annually on the second Sunday of March
HAA representations, usage and related time zones
- -03 - basic short
- -0300 - basic
- -03:00 - extended
- -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
- Papa - Military abbreviation for HAA
- P - short form of 'Papa'
- ADT - Atlantic Daylight Time
- PMT - Pierre & Miquelon Standard Time
- PMST - Pierre & Miquelon Standard Time
- AMST - Amazon Summer Time
- ART - Argentina Time
- BRT - Brasília time
- CLST - Chile Summer Time
- FKST - Falkland Islands Summer Time
- GFT - French Guiana Time
- P - Papa Time Zone
- PYST - Paraguay Summer Time
- SRT - Suriname Time
- UYT - Uruguay Time