AST to SGT Converter
SGT is 12 hours ahead of AST. 9:00 AM AST = 9:00 PM SGT.
SGT is 12 hours ahead of AST at the moment. To convert AST to SGT, add 12 hours to the AST time: 9:00 AM AST = 9:00 PM SGT.
AST (Atlantic Time) is used in Nova Scotia, New Brunswick, PEI; Puerto Rico and the Eastern Caribbean (all year). SGT (Singapore Time) is used in Singapore.
AST here is Atlantic Standard Time, not Arabia Standard Time.
AST to SGT time conversion table
AST to SGT on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AST | SGT | Day |
|---|---|---|
| 12:00 AM AST | 12:00 PM SGT | — |
| 1:00 AM AST | 1:00 PM SGT | — |
| 2:00 AM AST | 2:00 PM SGT | — |
| 3:00 AM AST | 3:00 PM SGT | — |
| 4:00 AM AST | 4:00 PM SGT | — |
| 5:00 AM AST | 5:00 PM SGT | — |
| 6:00 AM AST | 6:00 PM SGT | — |
| 7:00 AM AST | 7:00 PM SGT | — |
| 8:00 AM AST | 8:00 PM SGT | — |
| 9:00 AM AST | 9:00 PM SGT | — |
| 10:00 AM AST | 10:00 PM SGT | night |
| 11:00 AM AST | 11:00 PM SGT | night |
| 12:00 PM AST | 12:00 AM SGT | next day |
| 1:00 PM AST | 1:00 AM SGT | next day |
| 2:00 PM AST | 2:00 AM SGT | next day |
| 3:00 PM AST | 3:00 AM SGT | next day |
| 4:00 PM AST | 4:00 AM SGT | next day |
| 5:00 PM AST | 5:00 AM SGT | next day |
| 6:00 PM AST | 6:00 AM SGT | next day |
| 7:00 PM AST | 7:00 AM SGT | next day |
| 8:00 PM AST | 8:00 AM SGT | next day |
| 9:00 PM AST | 9:00 AM SGT | next day |
| 10:00 PM AST | 10:00 AM SGT | next day |
| 11:00 PM AST | 11:00 AM SGT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AST to SGT
Add 12 hours to the AST time to get SGT.
Example: 9:00 AM AST = 9:00 PM SGT.
Across midnight: 10:00 PM AST = 10:00 AM SGT (next day). The date changes, so always check the day as well as the hour.
Time difference between AST and SGT
The time difference between AST and SGT is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: SGT is 12 hours ahead of AST.
- 8 Mar 2026 – 31 Oct 2026: SGT is 11 hours ahead of AST.
- 1 Nov 2026 – 30 Dec 2026: SGT is 12 hours ahead of AST.
AST and SGT during daylight saving time
- AST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from AST (UTC−4) to ADT (UTC−3).
- SGT does not observe daylight saving time; it stays on UTC+8 all year.
Best time for a meeting between AST and SGT
AST and SGT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 7:00 PM SGT.
AST to SGT FAQ
What is the time difference between AST and SGT?
Right now SGT is 12 hours ahead of AST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AST in SGT?
9:00 AM AST is 9:00 PM SGT.
What is 12 PM (noon) AST in SGT?
12:00 PM AST is 12:00 AM SGT (next day).
Is SGT ahead of or behind AST?
SGT is 12 hours ahead of AST, so it is later in SGT than in AST.
Does AST change for daylight saving time?
Yes. AST next changes on 14 Mar 2027, when clocks go forward one hour from AST to ADT.
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 AST and SGT?
AST and SGT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 7:00 PM SGT.
Related conversions
Convert SGT to AST
Convert AST to other time zones
Convert other time zones to SGT
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.