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JST to GMT Converter
Convert Japan Standard Time (JST) to Greenwich Mean Time (GMT) and compare the time difference between the two time zones.
Local: Wed, Sep 9, 2026 00:00 PM
JST
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GMT
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JST to GMT Time Difference
GMT is 9 hours behind of JST.
JST to GMT Conversion Table
Use this table as a quick reference when converting common times from JST to GMT.
| JST | GMT |
|---|---|
| 12:00 AM | 3:00 PMprevious day |
| 3:00 AM | 6:00 PMprevious day |
| 6:00 AM | 9:00 PMprevious day |
| 9:00 AM | 12:00 AM |
| 12:00 PM | 3:00 AM |
| 3:00 PM | 6:00 AM |
| 6:00 PM | 9:00 AM |
| 9:00 PM | 12:00 PM |
About Japan Standard Time (JST)
Japan Standard Time (JST) is nine hours ahead of Coordinated Universal Time, UTC+9.
- Abbreviation
- JST
- UTC Offset
- UTC+9
- Region
- Japan
About Greenwich Mean Time (GMT)
Greenwich Mean Time (GMT) is a time standard based on the mean solar time at Greenwich, London.
- Abbreviation
- GMT
- UTC Offset
- UTC±0
- Region
- Europe
How to Convert JST to GMT
Compare the Zones
The converter calculates the corresponding time in GMT.
Check the Date
Remember that a conversion can move the result to the previous or next calendar day.