IST to EST to Tokyo Time Converter
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Quick answers
Selected conversion
5:30 pm17:30 IST (UTC+5:30), Nov 15, 2026 = 7:00 am07:00 EST (UTC-5), Nov 15, 2026 = 9:00 pm21:00 JST (UTC+9), Nov 15, 2026
IST is 10 hours and 30 minutes ahead of EST. IST is 3 hours and 30 minutes behind Tokyo.
How the time difference changes
IST to EST
For most of the year, IST is 9 hours and 30 minutes ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, IST is 10 hours and 30 minutes ahead of EST.
For most of the year, working hours of 9:00 am to 6:00 pm in IST correspond to 11:30 pm (previous day) to 8:30 am in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in IST correspond to 10:30 pm (previous day) to 7:30 am in EST.For most of the year, working hours of 09:00 to 18:00 in IST correspond to 23:30 (previous day) to 08:30 in EDT. At other times of the year, working hours of 09:00 to 18:00 in IST correspond to 22:30 (previous day) to 07:30 in EST.
IST to Tokyo
IST is 3 hours and 30 minutes behind Tokyo year-round.
Working hours of 9:00 am to 6:00 pm in IST correspond to 12:30 pm to 9:30 pm in Tokyo.Working hours of 09:00 to 18:00 in IST correspond to 12:30 to 21:30 in Tokyo.
Compare IST time with EST and Tokyo time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
India Standard Time is 10 hours and 30 minutes ahead of Eastern Standard Time. India Standard Time is 3 hours and 30 minutes behind JST (Japan Standard Time).
5:30 pm17:30 in IST is 7:00 am07:00 in EST and is 9:00 pm21:00 in Tokyo, Japan
IST to EST call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in IST which corresponds to 8am-9am08:00-09:00 in EST. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
IST to Tokyo call time
Best time for a conference call or a meeting is between 9am-2:30pm09:00-14:30 in IST which corresponds to 12:30pm-6pm12:30-18:00 in Tokyo.
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
9:00 pm21:00 JST (Japan Standard Time) (Tokyo, Japan). Offset UTC +9:00 hours
5:30 pm17:30 IST / 7:00 am07:00 EST / 9:00 pm21:00 Tokyo, Japan
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.
| IST | EST | Tokyo, Japan |
|---|---|---|
| 1:30pm previous day | 3:30am | |
| 2:30pm previous day | 4:30am | |
| 3:30pm previous day | 5:30am | |
| 4:30pm previous day | 6:30am | |
| 5:30pm previous day | 7:30am | |
| 6:30pm previous day | 8:30am | |
| 7:30pm previous day | 9:30am | |
| 8:30pm previous day | 10:30am | |
| 9:30pm previous day | 11:30am | |
| 10:30pm previous day | 12:30pm | |
| 11:30pm previous day | 1:30pm | |
| 12:30am | 2:30pm | |
| 1:30am | 3:30pm | |
| 2:30am | 4:30pm | |
| 3:30am | 5:30pm | |
| 4:30am | 6:30pm | |
| 5:30am | 7:30pm | |
| 6:30am | 8:30pm | |
| 7:30am | 9:30pm | |
| 8:30am | 10:30pm | |
| 9:30am | 11:30pm | |
| 10:30am | 12:30am next day | |
| 11:30am | 1:30am next day | |
| 12:30pm | 2:30am next day | |
| 13:30 previous day | 03:30 | |
| 14:30 previous day | 04:30 | |
| 15:30 previous day | 05:30 | |
| 16:30 previous day | 06:30 | |
| 17:30 previous day | 07:30 | |
| 18:30 previous day | 08:30 | |
| 19:30 previous day | 09:30 | |
| 20:30 previous day | 10:30 | |
| 21:30 previous day | 11:30 | |
| 22:30 previous day | 12:30 | |
| 23:30 previous day | 13:30 | |
| 00:30 | 14:30 | |
| 01:30 | 15:30 | |
| 02:30 | 16:30 | |
| 03:30 | 17:30 | |
| 04:30 | 18:30 | |
| 05:30 | 19:30 | |
| 06:30 | 20:30 | |
| 07:30 | 21:30 | |
| 08:30 | 22:30 | |
| 09:30 | 23:30 | |
| 10:30 | 00:30 next day | |
| 11:30 | 01:30 next day | |
| 12:30 | 02:30 next day |
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
- +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
Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States
Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
Today all shaded areas are on EST.
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).
Start: Eastern Standard Time (EST) started 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. Standard time starts annually on the first Sunday of November.
End: Eastern Standard Time (EST) ends 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 local daylight time instead. Standard time ends annually on the second Sunday of March.
See USA daylight saving time and upcoming clock changes worldwide.
EST representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
- Romeo - Military abbreviation for EST
- R - short form of 'Romeo'
- America/Atikokan
- America/Cancun
- America/Cayman
- America/Coral_Harbour
- America/Detroit
- America/Fort_Wayne
- America/Grand_Turk
- America/Indiana/Indianapolis
- America/Indiana/Marengo
- America/Indiana/Petersburg
- America/Indiana/Vevay
- America/Indiana/Vincennes
- America/Indiana/Winamac
- America/Indianapolis
- America/Iqaluit
- America/Jamaica
- America/Kentucky/Louisville
- America/Kentucky/Monticello
- America/Louisville
- America/Montreal
- America/Nassau
- America/New_York
- America/Nipigon
- America/Panama
- America/Pangnirtung
- America/Port-au-Prince
- America/Thunder_Bay
- America/Toronto
- Canada/Eastern
- EST
- EST5EDT
- Jamaica
- US/East-Indiana
- US/Eastern
- US/Michigan
- CDT - Central Daylight Time
- EST - Eastern Standard Time
- ET - Eastern Time
- COT - Colombia Time
- CST - Cuba Standard Time
- EASST - Easter Island Summer Time
- ECT - Ecuador Time
- PET - Peru Time
- R - Romeo Time Zone