JST to GST Converter – Japan Standard Time to Gulf Standard Time
GST is 5 hours behind JST. JST (Japan Standard Time) is UTC+9 all year, while GST (Gulf Standard Time) is UTC+4 all year. The live clocks below show the current time in both zones, updated every second.
JST to GST Conversion Table (Hour by Hour)
Standard-time conversion from Japan Standard Time to Gulf Standard Time.
| JST (UTC+9) | GST (UTC+4) |
|---|---|
| 12:00 AM | 7:00 PM (previous day) |
| 1:00 AM | 8:00 PM (previous day) |
| 2:00 AM | 9:00 PM (previous day) |
| 3:00 AM | 10:00 PM (previous day) |
| 4:00 AM | 11:00 PM (previous day) |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
Frequently Asked Questions
What is the time difference between JST and GST?
GST is 5 hours behind JST. JST (Japan Standard Time) is UTC+9 and GST (Gulf Standard Time) is UTC+4.
How do I convert JST to GST?
Take your time in JST and subtract 5 hours. For example, 9:00 AM JST is 4:00 AM in GST. The live clocks at the top of this page always show the current conversion.
Does daylight saving time affect JST to GST conversion?
No. Neither JST nor GST observes daylight saving time, so the difference between them is the same all year round.
What is the best time for a meeting between JST and GST?
Look for overlap between 9:00 AM-6:00 PM working hours in both zones using the conversion table above. GST is 5 hours behind JST, so there is normally several hours of business-hours overlap.