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UTC to JST time converter
Japan is 9 hours ahead of UTC all year.
UTC to JST conversion table
Local time in UTC and the matching time in Japan on two reference dates, one in winter and one in summer for the northern hemisphere.
| UTC (UTC) | Japan on 15 January | Japan on 15 July |
|---|---|---|
| 08:00 | 17:00 | 17:00 |
| 09:00 | 18:00 | 18:00 |
| 10:00 | 19:00 | 19:00 |
| 12:00 | 21:00 | 21:00 |
| 15:00 | 00:00 (+1 day) | 00:00 (+1 day) |
| 17:00 | 02:00 (+1 day) | 02:00 (+1 day) |
| 18:00 | 03:00 (+1 day) | 03:00 (+1 day) |
| 21:00 | 06:00 (+1 day) | 06:00 (+1 day) |
Best meeting times between UTC and Japan
- January: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-12:00 UTC = 16:00-21:00 JST.
- July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-12:00 UTC = 16:00-21:00 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 UTC and JST
- UTC does not change its clocks in 2026.
- Japan does not change its clocks in 2026.
About the two zones
UTC. UTC is the reference all other zones are measured from. It never changes for daylight saving, which is why servers, logs and schedules are best kept in UTC.
Japan. Japan Standard Time is UTC+9 all year with no daylight saving.
Frequently asked questions
What time is 9 AM UTC in JST?
On 15 January, 09:00 in UTC is 18:00 in Japan. On 15 July it is 18:00.
What is the time difference between UTC and Japan?
Japan is 9 hours ahead of UTC all year.
Does the time difference between UTC and JST change during the year?
No. Neither zone changes its clocks in a way that alters the gap, so the difference stays at 9 hours.
When is the best time for a meeting between UTC and Japan?
No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-12:00 UTC = 16:00-21:00 JST. In July: No overlap inside both working days. The closest flexible hours (07:00-21:00): 07:00-12:00 UTC = 16:00-21:00 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.