JST to GST Converter
GST is 5 hours behind JST
JST to GST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in GST
| JST | GST |
|---|---|
| 12:00 AM | 7:00 PM -1d |
| 1:00 AM | 8:00 PM -1d |
| 2:00 AM | 9:00 PM -1d |
| 3:00 AM | 10:00 PM -1d |
| 4:00 AM | 11:00 PM -1d |
| 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 |
Converting Japan Standard Time to Gulf Standard Time
Japan Standard Time (JST) and Gulf Standard Time (GST) are separated by a 5 hours time difference. GST is 5 hours behind JST. JST is UTC+9, used in Japan, while GST is UTC+4, used in United Arab Emirates, Oman.
When converting from JST to GST, the key reference points to remember are: 9:00 AM JST equals 4:00 AM GST, 12:00 PM noon JST equals 7:00 AM GST, and 5:00 PM JST equals 12:00 PM GST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across JST and GST
For professionals scheduling meetings between JST and GST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 5 hours difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
JST does not observe Daylight Saving Time, maintaining UTC+9 year-round. GST does not observe DST, staying at UTC+4 year-round.