GST to JST Converter
JST is 5 hours ahead of GST
GST to JST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in JST
| GST | JST |
|---|---|
| 12:00 AM | 5:00 AM |
| 1:00 AM | 6:00 AM |
| 2:00 AM | 7:00 AM |
| 3:00 AM | 8:00 AM |
| 4:00 AM | 9:00 AM |
| 5:00 AM | 10:00 AM |
| 6:00 AM | 11:00 AM |
| 7:00 AM | 12:00 PM |
| 8:00 AM | 1:00 PM |
| 9:00 AM | 2:00 PM |
| 10:00 AM | 3:00 PM |
| 11:00 AM | 4:00 PM |
| 12:00 PM | 5:00 PM |
| 1:00 PM | 6:00 PM |
| 2:00 PM | 7:00 PM |
| 3:00 PM | 8:00 PM |
| 4:00 PM | 9:00 PM |
| 5:00 PM | 10:00 PM |
| 6:00 PM | 11:00 PM |
| 7:00 PM | 12:00 AM +1d |
| 8:00 PM | 1:00 AM +1d |
| 9:00 PM | 2:00 AM +1d |
| 10:00 PM | 3:00 AM +1d |
| 11:00 PM | 4:00 AM +1d |
Converting Gulf Standard Time to Japan Standard Time
Gulf Standard Time (GST) and Japan Standard Time (JST) are separated by a 5 hours time difference. JST is 5 hours ahead of GST. GST is UTC+4, used in United Arab Emirates, Oman, while JST is UTC+9, used in Japan.
When converting from GST to JST, the key reference points to remember are: 9:00 AM GST equals 2:00 PM JST, 12:00 PM noon GST equals 5:00 PM JST, and 5:00 PM GST equals 10:00 PM JST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across GST and JST
For professionals scheduling meetings between GST and JST, 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
GST does not observe Daylight Saving Time, maintaining UTC+4 year-round. JST does not observe DST, staying at UTC+9 year-round.