JST to EST Converter
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
9:00 pm21:00 JST (UTC+9), Oct 23, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 23, 2026
JST is 13 hours ahead of EDT.
JST and EST (US winter time, UTC-5) examples
These examples always use JST (UTC+9) and EST (UTC-5). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
JST is 14 hours ahead of EST.
EST is US Eastern winter time (early November to mid-March). The rest of the year New York uses EDT (UTC-4), one hour later. In July, 4:00 am JST = 3:00 pm EDT (previous day)04:00 JST = 15:00 EDT (previous day). For Eastern Time that follows daylight saving time, use JST to ET. For daylight-time examples, use JST to EDT.
Popular JST to EST conversions
| JST | JST 24-hour | EST (US winter time, UTC-5) | EST (US winter time, UTC-5) 24-hour |
|---|---|---|---|
| 4:00 am | 04:00 | 2:00 pm (previous day) | 14:00 (previous day) |
How the time difference changes
For most of the year, JST is 13 hours ahead of EDT. From Nov 1, 2026 to Mar 14, 2027, JST is 14 hours ahead of EST.
For most of the year, working hours of 9:00 am to 6:00 pm in JST correspond to 8:00 pm (previous day) to 5:00 am in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in JST correspond to 7:00 pm (previous day) to 4:00 am in EST.For most of the year, working hours of 09:00 to 18:00 in JST correspond to 20:00 (previous day) to 05:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in JST correspond to 19:00 (previous day) to 04:00 in EST.
Compare JST time with EST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Japan Standard Time is 13 hours ahead of Eastern Daylight Time.
9:00 pm21:00 in JST is 8:00 am08:00 in EDT
JST to EDT call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in JST which corresponds to 6:30pm-7:30pm18:30-19:30 in EDT (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
9:00 pm21:00 JST / 8:00 am08:00 EDT
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 | EDT |
|---|---|
| 11:00am previous day | |
| 12:00pm previous day | |
| 1:00pm previous day | |
| 2:00pm previous day | |
| 3:00pm previous day | |
| 4:00pm previous day | |
| 5:00pm previous day | |
| 6:00pm previous day | |
| 7:00pm previous day | |
| 8:00pm previous day | |
| 9:00pm previous day | |
| 10:00pm previous day | |
| 11:00pm previous day | |
| 12:00am | |
| 1:00am | |
| 2:00am | |
| 3:00am | |
| 4:00am | |
| 5:00am | |
| 6:00am | |
| 7:00am | |
| 8:00am | |
| 9:00am | |
| 10:00am | |
| 11:00 previous day | |
| 12:00 previous day | |
| 13:00 previous day | |
| 14:00 previous day | |
| 15:00 previous day | |
| 16:00 previous day | |
| 17:00 previous day | |
| 18:00 previous day | |
| 19:00 previous day | |
| 20:00 previous day | |
| 21:00 previous day | |
| 22:00 previous day | |
| 23:00 previous day | |
| 00:00 | |
| 01:00 | |
| 02:00 | |
| 03:00 | |
| 04:00 | |
| 05:00 | |
| 06:00 | |
| 07:00 | |
| 08:00 | |
| 09:00 | |
| 10:00 |
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
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 the lighter areas are on UTC−4 (EDT).
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).
End: Eastern Standard Time (EST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Eastern Standard Time (EST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
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