JST to UTC Time Converter
UTC is currently 9 hours behind Tokyo.
- 9:00 AM GMT+9 → 12:00 AM UTC
- 12:00 PM GMT+9 → 3:00 AM UTC
- 5:00 PM GMT+9 → 8:00 AM UTC
Need the opposite direction? UTC to Tokyo Time →
Current Time
Tokyo
+09:00Tue, Jul 28 · GMT+9
UTC
+00:00Tue, Jul 28 · UTC
Daylight Saving Time Status
Tokyo
Tokyo does not observe Daylight Saving Time.
UTC
UTC does not observe Daylight Saving Time.
Best Meeting Times
| Tokyo Time | UTC Time | Meeting Suitability |
|---|---|---|
| 00:00 | 15:00-1d | — |
| 01:00 | 16:00-1d | — |
| 02:00 | 17:00-1d | — |
| 03:00 | 18:00-1d | — |
| 04:00 | 19:00-1d | — |
| 05:00 | 20:00-1d | — |
| 06:00 | 21:00-1d | — |
| 07:00 | 22:00-1d | — |
| 08:00 | 23:00-1d | — |
| 09:00 | 00:00 | — |
| 10:00 | 01:00 | — |
| 11:00 | 02:00 | — |
| 12:00 | 03:00 | — |
| 13:00 | 04:00 | — |
| 14:00 | 05:00 | — |
| 15:00 | 06:00 | — |
| 16:00 | 07:00 | — |
| 17:00 | 08:00 | ⚠️ Edge |
| 18:00 | 09:00 | ⚠️ Edge |
| 19:00 | 10:00 | — |
| 20:00 | 11:00 | — |
| 21:00 | 12:00 | — |
| 22:00 | 13:00 | — |
| 23:00 | 14:00 | — |
✅ Both cities within 9 AM–6 PM ⚠️ One city on edge of working hours
About This Time Zone Pair
UTC (Coordinated Universal Time) is the global time standard from which all time zones are offset — it does not observe Daylight Saving Time and never shifts. GMT (Greenwich Mean Time) is effectively UTC+0 but is a time zone, not a standard; the UK observes GMT in winter and BST (UTC+1) in summer. Expressing call and meeting times in UTC eliminates DST ambiguity across regions.
Tokyo (GMT+9) is 9 hours ahead of UTC (UTC). When it's 9:00 AM in Tokyo, it's 12:00 AM in UTC.
Neither Tokyo nor UTC observes Daylight Saving Time, so the offset between them remains constant year-round.
There is no standard 9 AM–6 PM overlap between Tokyo and UTC. For recurring calls or meetings, consider early morning in Tokyo or late afternoon in UTC, and use async tools when possible.
For one-off conversions, use the converter above. For recurring calls or meetings, export an .ics calendar invite — attendees see the time in their local zone automatically.
This guide covers Tokyo (JST) to UTC (UTC) specifically. To convert a different pair, browse all conversions or add cities directly in the converter above.
Frequently Asked Questions
- What is the time difference between Tokyo and UTC?
- UTC is 9 hours behind Tokyo. This offset may shift by one hour when either city transitions in or out of Daylight Saving Time.
- What is a good meeting time between Tokyo and UTC?
- There is no standard 9 AM–6 PM overlap between Tokyo and UTC. Consider early morning in one city or late afternoon in the other, or use async communication.
- Does Tokyo observe Daylight Saving Time?
- No. Tokyo (JST) does not observe Daylight Saving Time. The offset remains constant year-round.
- How do I convert JST to UTC manually?
- Subtract 9 hours to the JST time. For example, 9:00 AM JST = 12:00 AM UTC. (DST may shift this by ±1 hour twice a year.)
- Is Tokyo ahead of or behind UTC?
- Tokyo is 9 hours ahead of UTC. When it is noon in Tokyo, it is 3:00 AM in UTC.
- What are common JST to UTC conversions?
- Some quick examples: 9:00 AM GMT+9 = 12:00 AM UTC · 12:00 PM GMT+9 = 3:00 AM UTC · 5:00 PM GMT+9 = 8:00 AM UTC. Use the table above for all 24 hours.
Related Guides
Fact card
- Route:
- Tokyo → UTC
- Current offset:
- UTC is 9 hours behind Tokyo
- Timezone data:
- IANA tz database (tzdata)
- DST handling:
- Automatic — offset reflects the actual UTC offset at each moment
- Last calculated:
- Generated at build time, revalidates every 60 seconds
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