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DateAlmanac

What is WET in AST?

Atlantic Time is 4 hours behind

Western European Time is on UTC+0:00 and Atlantic Time is on UTC−4:00 right now. The gap changes during the year — see below.

Convert a time

AST — Atlantic Time

6:00 am

AST, Fri

Time in Lisbon
10:08:48 AM
Time in Halifax
6:08:48 AM
Difference
−4 h
Next clock change
March 14, 2027

When the difference changes

Western European Time and Atlantic Time 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, 2027Atlantic Time is 4 hours behind
  2. March 14, 2027 – March 28, 2027Atlantic Time is 3 hours behind
  3. March 28, 2027 – October 31, 2027Atlantic Time is 4 hours behind
  4. October 31, 2027 – November 7, 2027Atlantic Time is 3 hours behind
  5. November 7, 2027 – onwardsAtlantic Time is 4 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

Western European Time

Sunday, March 28, 2027

Clocks go forward one hour — 1:00 am becomes 2:00 am local time, and the zone is on WEST after that.

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.

WET to AST conversion table

Every hour of Friday, November 13, 2026, converted from Western European Time to Atlantic Time. 4 of the 24 hours fall on a different calendar day in Halifax, which is marked.

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

Scheduling between the two

Working hours overlap from 1:00 pm to 6:00 pm WET, which is 9:00 am to 2:00 pm AST. 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.

Western European Time (WET) is used in Portugal, Ireland and the Canary Islands

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

Other conversions