IST to HADT Converter
HADT is not used on this date
This converter uses HST (GMT -10), the offset Adak uses on this date. Open the HST converter.Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
IST and HADT examples
These examples always use IST (UTC+5:30) and HADT (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 14 hours and 30 minutes ahead of HADT.
How the time difference changes
For most of the year, IST is 14 hours and 30 minutes ahead of HADT. At other times of the year, IST is 15 hours and 30 minutes ahead of HST.
For most of the year, working hours of 9:00 am to 5:00 pm in IST correspond to 6:30 pm (previous day) to 2:30 am in HADT. At other times of the year, working hours of 9:00 am to 5:00 pm in IST correspond to 5:30 pm (previous day) to 1:30 am in HST.
Compare IST time with HADT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
India Standard Time is 15 hours and 30 minutes ahead of Hawaii Standard Time
5:30 pm17:30 in IST is 2:00 am02:00 in HST
IST to HST call time
Best time for a conference call or a meeting is between 8:30am-9:30am in IST which corresponds to 5pm-6pm in HST (previous day)
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
2:00 am02:00 Hawaii Standard Time (HST). Offset UTC -10:00 hours
5:30 pm17:30 IST / 2:00 am02:00 HST
| IST | HST |
|---|---|
| 12am (midnight) | 8:30 am |
| 1am | 9:30 am |
| 2am | 10:30 am |
| 3am | 11:30 am |
| 4am | 12:30 pm |
| 5am | 1:30 pm |
| 6am | 2:30 pm |
| 7am | 3:30 pm |
| 8am | 4:30 pm |
| 9am | 5:30 pm |
| 10am | 6:30 pm |
| 11am | 7:30 pm |
| 12pm (noon) | 8:30 pm |
| 1pm | 9:30 pm |
| 2pm | 10:30 pm |
| 3pm | 11:30 pm |
| 4pm | 12:30 am |
| 5pm | 1:30 am |
| 6pm | 2:30 am |
| 7pm | 3:30 am |
| 8pm | 4:30 am |
| 9pm | 5:30 am |
| 10pm | 6:30 am |
| 11pm | 7:30 am |
| 00:00 | 08:30 |
| 01:00 | 09:30 |
| 02:00 | 10:30 |
| 03:00 | 11:30 |
| 04:00 | 12:30 |
| 05:00 | 13:30 |
| 06:00 | 14:30 |
| 07:00 | 15:30 |
| 08:00 | 16:30 |
| 09:00 | 17:30 |
| 10:00 | 18:30 |
| 11:00 | 19:30 |
| 12:00 | 20:30 |
| 13:00 | 21:30 |
| 14:00 | 22:30 |
| 15:00 | 23:30 |
| 16:00 | 00:30 |
| 17:00 | 01:30 |
| 18:00 | 02:30 |
| 19:00 | 03:30 |
| 20:00 | 04:30 |
| 21:00 | 05:30 |
| 22:00 | 06:30 |
| 23:00 | 07:30 |
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
Hawaii-Aleutian Daylight Time
Offset: HADT is 9 hours behind Greenwich Mean Time (GMT) and is used in North America
Daylight Saving: Hawaii-Aleutian Daylight Time (HADT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Hawaii-Aleutian Standard Time (HAST).
End: Hawaii-Aleutian Daylight Time (HADT) 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: Hawaii-Aleutian Daylight Time (HADT) 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
HADT 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 west of the zero meridian.
- Victor - Military abbreviation for HADT
- V - short form of 'Victor'
- AKST - Alaska Standard Time
- AHDT - Alaska-Hawaii Daylight Time
- HADT - Hawaii-Aleutian Daylight Time
- GAMT - Gambier Time
- HDT - Hawaii Daylight Time
- V - Victor Time Zone