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JST to ET time converter
US Eastern is 13 hours behind Japan for 238 days of 2026, and 14 hours behind for the other 127 days, because daylight saving changes the gap.
JST to ET conversion table
Local time in Japan and the matching time in US Eastern on two reference dates, one in winter and one in summer for the northern hemisphere.
| Japan (JST) | US Eastern on 15 January | US Eastern on 15 July |
|---|---|---|
| 08:00 | 18:00 (-1 day) | 19:00 (-1 day) |
| 09:00 | 19:00 (-1 day) | 20:00 (-1 day) |
| 10:00 | 20:00 (-1 day) | 21:00 (-1 day) |
| 12:00 | 22:00 (-1 day) | 23:00 (-1 day) |
| 15:00 | 01:00 | 02:00 |
| 17:00 | 03:00 | 04:00 |
| 18:00 | 04:00 | 05:00 |
| 21:00 | 07:00 | 08:00 |
Best meeting times between Japan and US Eastern
- January: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-11:00 JST = 17:00-21:00 ET (-1 day).
- July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-10:00 JST = 18:00-21:00 ET (-1 day); 20:00-21:00 JST = 07:00-08:00 ET.
Want to add more people? The meeting planner starts with these two zones and lets you add up to four more.
Daylight saving between JST and ET
- Japan does not change its clocks in 2026.
- US Eastern moves its clocks forward on 8 March and back on 1 November in 2026.
- The gap is 13 hours for 238 days and 14 hours for 127 days of 2026.
About the two zones
Japan. Japan Standard Time is UTC+9 all year with no daylight saving.
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.
Frequently asked questions
What time is 9 AM JST in ET?
On 15 January, 09:00 in Japan is 19:00 (-1 day) in US Eastern. On 15 July it is 20:00 (-1 day).
What is the time difference between Japan and US Eastern?
US Eastern is 13 hours behind Japan for 238 days of 2026, and 14 hours behind for the other 127 days, because daylight saving changes the gap.
Does the time difference between JST and ET 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 Japan and US Eastern?
No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-11:00 JST = 17:00-21:00 ET (-1 day). In July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-10:00 JST = 18:00-21:00 ET (-1 day); 20:00-21:00 JST = 07:00-08:00 ET.
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.