COT to AST converter

Colombia Time (Bogotá, Medellín) to Atlantic Time (Halifax).

COT7:07 PMFri 30 Oct 2026

→

AST9:07 PMFri 30 Oct 2026

AST is 2 h ahead of COT.

Pick a time in COT

⇄ AST to COT

9:00 AM COT = 11:00 AM AST same day

Best time to meet

The best time to meet is between 9:00 AM and 3:00 PM COT, which is 11:00 AM to 5:00 PM AST. Both sides are then inside 9 AM to 5 PM.

COT to AST time table

For 30 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

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

Quick answers

9:00 AM COT = 11:00 AM AST
12:00 PM COT = 2:00 PM AST
3:00 PM COT = 5:00 PM AST
5:00 PM COT = 7:00 PM AST
9:00 AM AST = 7:00 AM COT
12:00 PM AST = 10:00 AM COT
5:00 PM AST = 3:00 PM COT

Does the gap change during the year?

Yes, because of daylight saving. Until 1 Nov 2026: AST is 2 h ahead of COT. From 1 Nov 2026 to 14 Mar 2027: AST is 1 h ahead of COT. From 14 Mar 2027 to 7 Nov 2027: AST is 2 h ahead of COT.

COT 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 COT and AST

COT here means Colombia Time, the clock in Bogotá, Medellín. Right now it is UTC−5. 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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