CST to AST converter

Central Time (Chicago, Dallas, Houston, Winnipeg) to Atlantic Time (Halifax).

CST7:07 PMFri 30 Oct 2026

→

AST9:07 PMFri 30 Oct 2026

AST is 2 h ahead of CST.

Pick a time in CST

⇄ AST to CST

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

Best time to meet

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

CST to AST time table

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

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

Quick answers

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

Does the gap change during the year?

Yes, because of daylight saving. Until 1 Nov 2026: AST is 2 h ahead of CST. From 1 Nov 2026 to 1 Nov 2026: AST is 1 h ahead of CST. From 1 Nov 2026 to 14 Mar 2027: AST is 2 h ahead of CST. From 14 Mar 2027 to 14 Mar 2027: AST is 3 h ahead of CST. From 14 Mar 2027 to 7 Nov 2027: AST is 2 h ahead of CST.

CST next changes its clocks on 1 Nov 2026 (back 1 h, to UTC−6), then on 14 Mar 2027 (forward 1 h, to UTC−5). 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 CST and AST

CST here means Central Time, the clock in Chicago, Dallas, Houston, Winnipeg. Right now it is UTC−5. Strictly, CST is the winter name; in summer these places use CDT. This page follows their real clock all year.

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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