AST to GST Converter
GST is 8 hours ahead of AST. 9:00 AM AST = 5:00 PM GST.
GST is 8 hours ahead of AST at the moment. To convert AST to GST, add 8 hours to the AST time: 9:00 AM AST = 5:00 PM GST.
AST (Atlantic Time) is used in Nova Scotia, New Brunswick, PEI; Puerto Rico and the Eastern Caribbean (all year). GST (Gulf Time) is used in United Arab Emirates and Oman.
AST here is Atlantic Standard Time, not Arabia Standard Time.
AST to GST time conversion table
AST to GST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AST | GST | Day |
|---|---|---|
| 12:00 AM AST | 8:00 AM GST | — |
| 1:00 AM AST | 9:00 AM GST | — |
| 2:00 AM AST | 10:00 AM GST | — |
| 3:00 AM AST | 11:00 AM GST | — |
| 4:00 AM AST | 12:00 PM GST | — |
| 5:00 AM AST | 1:00 PM GST | — |
| 6:00 AM AST | 2:00 PM GST | — |
| 7:00 AM AST | 3:00 PM GST | — |
| 8:00 AM AST | 4:00 PM GST | — |
| 9:00 AM AST | 5:00 PM GST | — |
| 10:00 AM AST | 6:00 PM GST | — |
| 11:00 AM AST | 7:00 PM GST | — |
| 12:00 PM AST | 8:00 PM GST | — |
| 1:00 PM AST | 9:00 PM GST | — |
| 2:00 PM AST | 10:00 PM GST | night |
| 3:00 PM AST | 11:00 PM GST | night |
| 4:00 PM AST | 12:00 AM GST | next day |
| 5:00 PM AST | 1:00 AM GST | next day |
| 6:00 PM AST | 2:00 AM GST | next day |
| 7:00 PM AST | 3:00 AM GST | next day |
| 8:00 PM AST | 4:00 AM GST | next day |
| 9:00 PM AST | 5:00 AM GST | next day |
| 10:00 PM AST | 6:00 AM GST | next day |
| 11:00 PM AST | 7:00 AM GST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AST to GST
Add 8 hours to the AST time to get GST.
Example: 9:00 AM AST = 5:00 PM GST.
Across midnight: 10:00 PM AST = 6:00 AM GST (next day). The date changes, so always check the day as well as the hour.
Time difference between AST and GST
The time difference between AST and GST 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: GST is 8 hours ahead of AST.
- 8 Mar 2026 – 31 Oct 2026: GST is 7 hours ahead of AST.
- 1 Nov 2026 – 30 Dec 2026: GST is 8 hours ahead of AST.
AST and GST 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).
- GST does not observe daylight saving time; it stays on UTC+4 all year.
Best time for a meeting between AST and GST
AST and GST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 3:00 PM GST.
AST to GST FAQ
What is the time difference between AST and GST?
Right now GST is 8 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 GST?
9:00 AM AST is 5:00 PM GST.
What is 12 PM (noon) AST in GST?
12:00 PM AST is 8:00 PM GST.
Is GST ahead of or behind AST?
GST is 8 hours ahead of AST, so it is later in GST 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 GST change for daylight saving time?
No. GST 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 GST?
AST and GST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 3:00 PM GST.
Related conversions
Convert GST to AST
Convert AST to other time zones
Convert other time zones to GST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.