JST to IST to Seattle Time Converter
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Quick answers
Selected conversion
9:00 pm21:00 JST (UTC+9), Oct 23, 2026 = 5:30 pm17:30 IST (UTC+5:30), Oct 23, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 23, 2026
JST is 3 hours and 30 minutes ahead of IST. JST is 16 hours ahead of Seattle.
How the time difference changes
JST to IST
JST is 3 hours and 30 minutes ahead of IST year-round.
Working hours of 9:00 am to 6:00 pm in JST correspond to 5:30 am to 2:30 pm in IST.Working hours of 09:00 to 18:00 in JST correspond to 05:30 to 14:30 in IST.
JST to Seattle
For most of the year, JST is 16 hours ahead of Seattle. From Nov 1, 2026 to Mar 14, 2027, JST is 17 hours ahead of Seattle.
For most of the year, working hours of 9:00 am to 6:00 pm in JST correspond to 5:00 pm (previous day) to 2:00 am in Seattle. At other times of the year, working hours of 9:00 am to 6:00 pm in JST correspond to 4:00 pm (previous day) to 1:00 am in Seattle.For most of the year, working hours of 09:00 to 18:00 in JST correspond to 17:00 (previous day) to 02:00 in Seattle. At other times of the year, working hours of 09:00 to 18:00 in JST correspond to 16:00 (previous day) to 01:00 in Seattle.
Compare JST time with IST and Seattle time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Japan Standard Time is 3 hours and 30 minutes ahead of India Standard Time. Japan Standard Time is 16 hours ahead of PDT (Pacific Daylight Time).
9:00 pm21:00 in JST is 5:30 pm17:30 in IST and is 5:00 am05:00 in Seattle, WA, USA
JST to IST call time
Best time for a conference call or a meeting is between 12:30pm-6pm12:30-18:00 in JST which corresponds to 9am-2:30pm09:00-14:30 in IST
JST to Seattle call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in JST which corresponds to 5pm-6pm17:00-18:00 in Seattle (previous day)
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
5:00 am05:00 PDT (Pacific Daylight Time) (Seattle, WA, USA). Offset UTC -7:00 hours
9:00 pm21:00 JST / 5:30 pm17:30 IST / 5:00 am05:00 Seattle, WA, USA
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.
| JST | IST | Seattle, WA, USA |
|---|---|---|
| 8:30pm previous day | 8:00am previous day | |
| 9:30pm previous day | 9:00am previous day | |
| 10:30pm previous day | 10:00am previous day | |
| 11:30pm previous day | 11:00am previous day | |
| 12:30am | 12:00pm previous day | |
| 1:30am | 1:00pm previous day | |
| 2:30am | 2:00pm previous day | |
| 3:30am | 3:00pm previous day | |
| 4:30am | 4:00pm previous day | |
| 5:30am | 5:00pm previous day | |
| 6:30am | 6:00pm previous day | |
| 7:30am | 7:00pm previous day | |
| 8:30am | 8:00pm previous day | |
| 9:30am | 9:00pm previous day | |
| 10:30am | 10:00pm previous day | |
| 11:30am | 11:00pm previous day | |
| 12:30pm | 12:00am | |
| 1:30pm | 1:00am | |
| 2:30pm | 2:00am | |
| 3:30pm | 3:00am | |
| 4:30pm | 4:00am | |
| 5:30pm | 5:00am | |
| 6:30pm | 6:00am | |
| 7:30pm | 7:00am | |
| 20:30 previous day | 08:00 previous day | |
| 21:30 previous day | 09:00 previous day | |
| 22:30 previous day | 10:00 previous day | |
| 23:30 previous day | 11:00 previous day | |
| 00:30 | 12:00 previous day | |
| 01:30 | 13:00 previous day | |
| 02:30 | 14:00 previous day | |
| 03:30 | 15:00 previous day | |
| 04:30 | 16:00 previous day | |
| 05:30 | 17:00 previous day | |
| 06:30 | 18:00 previous day | |
| 07:30 | 19:00 previous day | |
| 08:30 | 20:00 previous day | |
| 09:30 | 21:00 previous day | |
| 10:30 | 22:00 previous day | |
| 11:30 | 23:00 previous day | |
| 12:30 | 00:00 | |
| 13:30 | 01:00 | |
| 14:30 | 02:00 | |
| 15:30 | 03:00 | |
| 16:30 | 04:00 | |
| 17:30 | 05:00 | |
| 18:30 | 06:00 | |
| 19:30 | 07:00 |
Japan Standard Time
Offset: JST is 9 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Japan
Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 9.733 million people. Other major cities in this time zone include Yokohama, Osaka, Nagoya, Sapporo.
Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST 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 Japan: Japan time now
JST 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 JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- 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
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
Seattle Time Zone and Facts
Time Zone
PST – Pacific Standard Time, UTC-8 (standard time)