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DateAlmanac

What is AST in Mexico City?

Central Time – Mexico is 2 hours behind

Atlantic Time is on UTC−4:00 and Central Time – Mexico is on UTC−6:00 right now. The gap changes during the year — see below.

Convert a time

CST — Central Time – Mexico

4:00 am

CST, Fri

Time in Halifax
6:01:14 AM
Time in Mexico City
4:01:14 AM
Difference
−2 h
Next clock change
March 14, 2027

When the difference changes

Atlantic Time and Central Time – Mexico do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – March 14, 2027Central Time – Mexico is 2 hours behind
  2. March 14, 2027 – November 7, 2027Central Time – Mexico is 3 hours behind
  3. November 7, 2027 – onwardsCentral Time – Mexico is 2 hours behind

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Atlantic Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on ADT after that.

Central Time – Mexico

No clock changes

Central Time – Mexico stays on CST all year, so its offset from UTC never moves.

AST to Mexico City conversion table

Every hour of Friday, November 13, 2026, converted from Atlantic Time to Central Time – Mexico. 2 of the 24 hours fall on a different calendar day in Mexico City, which is marked.

12:00 am AST
10:00 pm CST−1 day
1:00 am AST
11:00 pm CST−1 day
2:00 am AST
12:00 am CST
3:00 am AST
1:00 am CST
4:00 am AST
2:00 am CST
5:00 am AST
3:00 am CST
6:00 am AST
4:00 am CST
7:00 am AST
5:00 am CST
8:00 am AST
6:00 am CST
9:00 am AST
7:00 am CST
10:00 am AST
8:00 am CST
11:00 am AST
9:00 am CST
12:00 pm AST
10:00 am CST
1:00 pm AST
11:00 am CST
2:00 pm AST
12:00 pm CST
3:00 pm AST
1:00 pm CST
4:00 pm AST
2:00 pm CST
5:00 pm AST
3:00 pm CST
6:00 pm AST
4:00 pm CST
7:00 pm AST
5:00 pm CST
8:00 pm AST
6:00 pm CST
9:00 pm AST
7:00 pm CST
10:00 pm AST
8:00 pm CST
11:00 pm AST
9:00 pm CST

Scheduling between the two

Working hours overlap from 11:00 am to 6:00 pm AST, which is 9:00 am to 4:00 pm CST. Anything inside that window falls in the normal working day at both ends.

A note on AST: it can also mean Arabia Standard Time (UTC+3). This page means Atlantic Time.

Atlantic Time (AST) is used in Nova Scotia, New Brunswick and Puerto Rico

Central Time – Mexico (CST) is used in most of Mexico. Mexico abolished daylight saving in October 2022, so it no longer tracks US Central Time in summer.

Other conversions