GST to JST Converter
JST is 5 hours ahead of GST. 9:00 AM GST = 2:00 PM JST.
JST is 5 hours ahead of GST. To convert GST to JST, add 5 hours to the GST time: 9:00 AM GST = 2:00 PM JST.
GST (Gulf Time) is used in United Arab Emirates and Oman. JST (Japan Time) is used in Japan.
GST to JST time conversion table
GST to JST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GST | JST | Day |
|---|---|---|
| 12:00 AM GST | 5:00 AM JST | night |
| 1:00 AM GST | 6:00 AM JST | — |
| 2:00 AM GST | 7:00 AM JST | — |
| 3:00 AM GST | 8:00 AM JST | — |
| 4:00 AM GST | 9:00 AM JST | — |
| 5:00 AM GST | 10:00 AM JST | — |
| 6:00 AM GST | 11:00 AM JST | — |
| 7:00 AM GST | 12:00 PM JST | — |
| 8:00 AM GST | 1:00 PM JST | — |
| 9:00 AM GST | 2:00 PM JST | work hours |
| 10:00 AM GST | 3:00 PM JST | work hours |
| 11:00 AM GST | 4:00 PM JST | work hours |
| 12:00 PM GST | 5:00 PM JST | — |
| 1:00 PM GST | 6:00 PM JST | — |
| 2:00 PM GST | 7:00 PM JST | — |
| 3:00 PM GST | 8:00 PM JST | — |
| 4:00 PM GST | 9:00 PM JST | — |
| 5:00 PM GST | 10:00 PM JST | night |
| 6:00 PM GST | 11:00 PM JST | night |
| 7:00 PM GST | 12:00 AM JST | next day |
| 8:00 PM GST | 1:00 AM JST | next day |
| 9:00 PM GST | 2:00 AM JST | next day |
| 10:00 PM GST | 3:00 AM JST | next day |
| 11:00 PM GST | 4:00 AM JST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert GST to JST
Add 5 hours to the GST time to get JST.
Example: 9:00 AM GST = 2:00 PM JST.
Across midnight: 10:00 PM GST = 3:00 AM JST (next day). The date changes, so always check the day as well as the hour.
Time difference between GST and JST
The time difference between GST and JST is 5 hours all year – JST is ahead of GST.
GST and JST during daylight saving time
- GST does not observe daylight saving time; it stays on UTC+4 all year.
- JST does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between GST and JST
GST and JST share 3 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 12:00 PM GST lands between 2:00 PM and 5:00 PM JST, inside working hours for both.
GST to JST FAQ
What is the time difference between GST and JST?
JST is 5 hours ahead of GST all year. 9:00 AM GST = 2:00 PM JST.
What is 9 AM GST in JST?
9:00 AM GST is 2:00 PM JST.
What is 12 PM (noon) GST in JST?
12:00 PM GST is 5:00 PM JST.
Is JST ahead of or behind GST?
JST is 5 hours ahead of GST, so it is later in JST than in GST.
Does GST change for daylight saving time?
No. GST stays on the same offset all year, so conversions never shift for daylight saving time.
Does JST change for daylight saving time?
No. JST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between GST and JST?
GST and JST share 3 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 12:00 PM GST lands between 2:00 PM and 5:00 PM JST, inside working hours for both.
Related conversions
Convert JST to GST
Convert GST to other time zones
Convert other time zones to JST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.