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IST
12am
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6am
9am
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6pm
9pm
HST/HADT
UTC−10
15h 30m behind
12am
3am
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9am
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9pm
HADT is not used on this date.

This converter uses HST (UTC−10), as in Adak.

Quick answers

Selected conversion

5:30 pm17:30 IST (UTC+5:30), Nov 14, 2026 = 2:00 am02:00 HST (UTC-10), Nov 14, 2026

IST is 15 hours and 30 minutes ahead of HST.

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. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, IST is 15 hours and 30 minutes ahead of HST.

For most of the year, working hours of 9:00 am to 6:00 pm in IST correspond to 6:30 pm (previous day) to 3:30 am in HADT. At other times of the year, working hours of 9:00 am to 6:00 pm in IST correspond to 5:30 pm (previous day) to 2:30 am in HST.For most of the year, working hours of 09:00 to 18:00 in IST correspond to 18:30 (previous day) to 03:30 in HADT. At other times of the year, working hours of 09:00 to 18:00 in IST correspond to 17:30 (previous day) to 02:30 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 9am-9:30am09:00-09:30 in IST which corresponds to 5:30pm-6pm17:30-18:00 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

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
ISTHST
8:30am previous day
9:30am previous day
10:30am previous day
11:30am previous day
12:30pm previous day
1:30pm previous day
2:30pm previous day
3:30pm previous day
4:30pm previous day
5:30pm previous day
6:30pm previous day
7:30pm previous day
8:30pm previous day
9:30pm previous day
10:30pm previous day
11:30pm previous day
12:30am
1:30am
2:30am
3:30am
4:30am
5:30am
6:30am
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08:30 previous day
09:30 previous day
10:30 previous day
11:30 previous day
12:30 previous day
13:30 previous day
14:30 previous day
15:30 previous day
16:30 previous day
17:30 previous day
18:30 previous day
19:30 previous day
20:30 previous day
21:30 previous day
22:30 previous day
23:30 previous day
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India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

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, Bengaluru, Hyderabad, Ahmedabad.

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; see upcoming clock changes worldwide.

Current time in India: India time now

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • 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).

Countries using this time zone: United States

Map of the areas on Hawaii-Aleutian Daylight Time (HADT)
HADT part of the year

Today the shaded areas are on UTC−10 (HST).

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).

123456789101112End: Hawaii-Aleutian Daylight Time (HADT) ended on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

123456789101112Start: Hawaii-Aleutian Daylight Time (HADT) starts on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

HADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -09 - basic short
  • -0900 - basic
  • -09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Victor - Military abbreviation for HADT
  • V - short form of 'Victor'
Time zones with the GMT -9 offset:
  • AKST - Alaska Standard Time
  • AHDT - Alaska-Hawaii Daylight Time
  • HADT - Hawaii-Aleutian Daylight Time
  • GAMT - Gambier Time
  • HDT - Hawaii-Aleutian Daylight Time
  • V - Victor Time Zone