JST to UTC Time Converter
Compare JST and UTC instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both Tokyo and UTC.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| JST (Tokyo) | UTC (UTC) |
|---|---|
| 12:00 AM | 03:00 PM(Fri, Jul 24) |
| 01:00 AM | 04:00 PM(Fri, Jul 24) |
| 02:00 AM | 05:00 PM(Fri, Jul 24) |
| 03:00 AM | 06:00 PM(Fri, Jul 24) |
| 04:00 AM | 07:00 PM(Fri, Jul 24) |
| 05:00 AM | 08:00 PM(Fri, Jul 24) |
| 06:00 AM | 09:00 PM(Fri, Jul 24) |
| 07:00 AM | 10:00 PM(Fri, Jul 24) |
| 08:00 AM | 11:00 PM(Fri, Jul 24) |
| 09:00 AM | 12:00 AM |
| 10:00 AM | 01:00 AM |
| 11:00 AM | 02:00 AM |
| 12:00 PM | 03:00 AM |
| 01:00 PM | 04:00 AM |
| 02:00 PM | 05:00 AM |
| 03:00 PM | 06:00 AM |
| 04:00 PM | 07:00 AM |
| 05:00 PM | 08:00 AM |
| 06:00 PM | 09:00 AM |
| 07:00 PM | 10:00 AM |
| 08:00 PM | 11:00 AM |
| 09:00 PM | 12:00 PM |
| 10:00 PM | 01:00 PM |
| 11:00 PM | 02:00 PM |
Daylight saving time
Neither Tokyo nor UTC observes daylight saving time — the offset between JST and UTC is fixed year-round.
Working-hours overlap
Standard 9-to-5 hours in Tokyo and UTC do not overlap. Use an early or late slot on one side.
Frequently asked questions
What is the time difference between JST and UTC?+
UTC (UTC+00:00) is currently 9 hours behind JST (UTC+09:00). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does JST or UTC observe daylight saving time?+
Neither Tokyo nor UTC observes daylight saving time, so the offset stays fixed all year. Times on this page always reflect the current local rules.
What are the best meeting hours between Tokyo and UTC?+
Standard 9–5 working hours in Tokyo and UTC do not overlap. Pick an early or late slot for one side, or use the 24-hour table above to find a time that works.
How do I quickly convert JST to UTC?+
Use the live clocks and 24-hour reference table above. Pick any hour on the JST row to see the matching UTC time. The Event Planner also lets you pick a specific date and share it with attendees.