Osaka Time to GMT Converter
GMT is 9 hours behind JST. 9:00 AM JST = 12:00 AM GMT.
GMT is 9 hours behind JST. To convert Osaka Time to GMT, subtract 9 hours from the Osaka Time time: 9:00 AM JST = 12:00 AM GMT.
Osaka Time (Osaka time) is used in Osaka, Japan. GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
Osaka Time to GMT time conversion table
Osaka Time to GMT on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Osaka Time | GMT | Day |
|---|---|---|
| 12:00 AM JST | 3:00 PM GMT | previous day |
| 1:00 AM JST | 4:00 PM GMT | previous day |
| 2:00 AM JST | 5:00 PM GMT | previous day |
| 3:00 AM JST | 6:00 PM GMT | previous day |
| 4:00 AM JST | 7:00 PM GMT | previous day |
| 5:00 AM JST | 8:00 PM GMT | previous day |
| 6:00 AM JST | 9:00 PM GMT | previous day |
| 7:00 AM JST | 10:00 PM GMT | previous day |
| 8:00 AM JST | 11:00 PM GMT | previous day |
| 9:00 AM JST | 12:00 AM GMT | night |
| 10:00 AM JST | 1:00 AM GMT | night |
| 11:00 AM JST | 2:00 AM GMT | night |
| 12:00 PM JST | 3:00 AM GMT | night |
| 1:00 PM JST | 4:00 AM GMT | night |
| 2:00 PM JST | 5:00 AM GMT | night |
| 3:00 PM JST | 6:00 AM GMT | — |
| 4:00 PM JST | 7:00 AM GMT | — |
| 5:00 PM JST | 8:00 AM GMT | — |
| 6:00 PM JST | 9:00 AM GMT | — |
| 7:00 PM JST | 10:00 AM GMT | — |
| 8:00 PM JST | 11:00 AM GMT | — |
| 9:00 PM JST | 12:00 PM GMT | — |
| 10:00 PM JST | 1:00 PM GMT | — |
| 11:00 PM JST | 2:00 PM GMT | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Osaka Time to GMT
Subtract 9 hours from the Osaka Time time to get GMT.
Example: 9:00 AM JST = 12:00 AM GMT.
Across midnight: 1:00 AM JST = 4:00 PM GMT (previous day). The date changes, so always check the day as well as the hour.
Time difference between Osaka Time and GMT
The time difference between Osaka Time and GMT is 9 hours all year – GMT is behind JST.
Osaka Time and GMT during daylight saving time
- Osaka Time does not observe daylight saving time; it stays on UTC+9 all year.
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
Best time for a meeting between Osaka Time and GMT
Osaka Time and GMT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM JST, which is 10:00 PM GMT.
Osaka Time to GMT FAQ
What is the time difference between Osaka Time and GMT?
GMT is 9 hours behind JST all year. 9:00 AM JST = 12:00 AM GMT.
What is 9 AM Osaka Time in GMT?
9:00 AM JST is 12:00 AM GMT.
What is 12 PM (noon) Osaka Time in GMT?
12:00 PM JST is 3:00 AM GMT.
Is GMT ahead of or behind Osaka Time?
GMT is 9 hours behind JST, so it is earlier in GMT than in Osaka Time.
Does Osaka Time change for daylight saving time?
No. Osaka Time stays on the same offset all year, so conversions never shift for daylight saving time.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between Osaka Time and GMT?
Osaka Time and GMT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM JST, which is 10:00 PM GMT.
Related conversions
Convert GMT to Osaka Time
Convert Osaka Time to other time zones
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Learn more
Updated 7 November 2026. Time zone data: IANA tz database.