JST: Japan Standard Time
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UTC+09:00
Japan Standard Time does not currently use daylight saving time.
Clear abbreviation meanings
JST to GMT time
Convert Japan Standard Time (UTC+09:00) to Greenwich Mean Time (UTC+00:00). The meanings used on this page are explicit because short time-zone abbreviations can be ambiguous.
JST
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UTC+09:00
Quick answer
The current difference is calculated here. Use the interactive converter for a specific past or future date.
GMT: Greenwich Mean Time
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UTC+00:00
A fixed zero-offset time standard in this converter.
Avoid abbreviation mistakes
For travel, legal deadlines or future meetings, choose a named city or IANA zone. A short abbreviation alone may refer to more than one region.
24-hour JST to GMT table
The table uses the exact definitions stated above.
| JST | GMT |
|---|---|
| 00:00 JST | Calculating… |
| 01:00 JST | Calculating… |
| 02:00 JST | Calculating… |
| 03:00 JST | Calculating… |
| 04:00 JST | Calculating… |
| 05:00 JST | Calculating… |
| 06:00 JST | Calculating… |
| 07:00 JST | Calculating… |
| 08:00 JST | Calculating… |
| 09:00 JST | Calculating… |
| 10:00 JST | Calculating… |
| 11:00 JST | Calculating… |
| 12:00 JST | Calculating… |
| 13:00 JST | Calculating… |
| 14:00 JST | Calculating… |
| 15:00 JST | Calculating… |
| 16:00 JST | Calculating… |
| 17:00 JST | Calculating… |
| 18:00 JST | Calculating… |
| 19:00 JST | Calculating… |
| 20:00 JST | Calculating… |
| 21:00 JST | Calculating… |
| 22:00 JST | Calculating… |
| 23:00 JST | Calculating… |
Frequently asked questions
What does JST mean here?
Japan Standard Time (UTC+09:00). Japan Standard Time does not currently use daylight saving time.
What does GMT mean here?
Greenwich Mean Time (UTC+00:00). A fixed zero-offset time standard in this converter.