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