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ET to JST time converter
Japan is 13 hours ahead of US Eastern for 238 days of 2026, and 14 hours ahead of for the other 127 days, because daylight saving changes the gap.
ET to JST conversion table
Local time in US Eastern and the matching time in Japan on two reference dates, one in winter and one in summer for the northern hemisphere.
| US Eastern (ET) | Japan on 15 January | Japan on 15 July |
|---|---|---|
| 08:00 | 22:00 | 21:00 |
| 09:00 | 23:00 | 22:00 |
| 10:00 | 00:00 (+1 day) | 23:00 |
| 12:00 | 02:00 (+1 day) | 01:00 (+1 day) |
| 15:00 | 05:00 (+1 day) | 04:00 (+1 day) |
| 17:00 | 07:00 (+1 day) | 06:00 (+1 day) |
| 18:00 | 08:00 (+1 day) | 07:00 (+1 day) |
| 21:00 | 11:00 (+1 day) | 10:00 (+1 day) |
Best meeting times between US Eastern and Japan
- January: No overlap inside both working days. The closest flexible hours (07:00-21:00): 17:00-21:00 ET = 07:00-11:00 JST (+1 day).
- July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 18:00-21:00 ET = 07:00-10:00 JST (+1 day); 07:00-08:00 ET = 20:00-21:00 JST.
Want to add more people? The meeting planner starts with these two zones and lets you add up to four more.
Daylight saving between ET and JST
- US Eastern moves its clocks forward on 8 March and back on 1 November in 2026.
- Japan does not change its clocks in 2026.
- The gap is 13 hours for 238 days and 14 hours for 127 days of 2026.
About the two zones
US Eastern. US Eastern Time is UTC-5 in winter (EST) and UTC-4 in summer (EDT), and is the default business time for much of the US East Coast.
Japan. Japan Standard Time is UTC+9 all year with no daylight saving.
Frequently asked questions
What time is 9 AM ET in JST?
On 15 January, 09:00 in US Eastern is 23:00 in Japan. On 15 July it is 22:00.
What is the time difference between US Eastern and Japan?
Japan is 13 hours ahead of US Eastern for 238 days of 2026, and 14 hours ahead of for the other 127 days, because daylight saving changes the gap.
Does the time difference between ET and JST change during the year?
Yes. US Eastern changes its clocks and Japan does not, so the gap moves between 13 and 14 hours. Always convert with the actual date.
When is the best time for a meeting between US Eastern and Japan?
No overlap inside both working days. The closest flexible hours (07:00-21:00): 17:00-21:00 ET = 07:00-11:00 JST (+1 day). In July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 18:00-21:00 ET = 07:00-10:00 JST (+1 day); 07:00-08:00 ET = 20:00-21:00 JST.
More conversions
Need the time in a scheduler? Convert a local-time cron schedule to UTC, or see which jobs a clock change affects with the DST collision simulator.