GST to AST converter

Gulf Time (Dubai, Abu Dhabi, Muscat) to Atlantic Time (Halifax).

GST4:07 AMSat 31 Oct 2026

→

AST9:07 PMFri 30 Oct 2026

AST is 7 h behind GST.

Pick a time in GST

⇄ AST to GST

9:00 AM GST = 2:00 AM AST same day

Best time to meet

The best time to meet is between 4:00 PM and 5:00 PM GST, which is 9:00 AM to 10:00 AM AST. Both sides are then inside 9 AM to 5 PM.

GST to AST time table

For 31 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

GST	AST
12:00 AM GST	5:00 PM AST previous day
1:00 AM GST	6:00 PM AST previous day
2:00 AM GST	7:00 PM AST previous day
3:00 AM GST	8:00 PM AST previous day
4:00 AM GST	9:00 PM AST previous day
5:00 AM GST	10:00 PM AST previous day
6:00 AM GST	11:00 PM AST previous day
7:00 AM GST	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	3:00 PM AST
11:00 PM GST	4:00 PM AST

Quick answers

9:00 AM GST = 2:00 AM AST
12:00 PM GST = 5:00 AM AST
3:00 PM GST = 8:00 AM AST
5:00 PM GST = 10:00 AM AST
9:00 AM AST = 4:00 PM GST
12:00 PM AST = 7:00 PM GST
5:00 PM AST = 12:00 AM GST (next day)

Does the gap change during the year?

Yes, because of daylight saving. Until 1 Nov 2026: AST is 7 h behind GST. From 1 Nov 2026 to 14 Mar 2027: AST is 8 h behind GST. From 14 Mar 2027 to 7 Nov 2027: AST is 7 h behind GST.

GST does not change its clocks. AST next changes its clocks on 1 Nov 2026 (back 1 h, to UTC−4), then on 14 Mar 2027 (forward 1 h, to UTC−3).

About GST and AST

GST here means Gulf Time, the clock in Dubai, Abu Dhabi, Muscat. Right now it is UTC+4. It has no daylight saving.

AST here means Atlantic Time, the clock in Halifax. Right now it is UTC−3. Strictly, AST is the winter name; in summer these places use ADT. This page follows their real clock all year.

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