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DateAlmanac

What is AST in WET?

Western European Time is 4 hours ahead

Atlantic Time is on UTC−3:00 and Western European Time is on UTC+1:00 right now. Both are on daylight saving, so their clocks read ADT and WEST. The gap changes during the year — see below.

Time in Halifax
9:03:56 AM
Time in Lisbon
1:03:56 PM
Difference
+4 h
Next clock change
October 25, 2026

Convert a time

WEST — Western European Time

1:00 pm

WEST, Fri

When the difference changes

Atlantic Time and Western European 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 – October 24, 2026Western European Time is 4 hours ahead
  2. October 24, 2026 – November 1, 2026Western European Time is 3 hours ahead
  3. November 1, 2026 – March 14, 2027Western European Time is 4 hours ahead
  4. March 14, 2027 – March 27, 2027Western European Time is 3 hours ahead
  5. March 27, 2027 – onwardsWestern European Time is 4 hours ahead

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, November 1, 2026

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

Western European Time

Sunday, October 25, 2026

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

AST to WET conversion table

Every hour of Friday, September 25, 2026, converted from Atlantic Time to Western European Time. 4 of the 24 hours fall on a different calendar day in Lisbon, which is marked.

12:00 am ADT
4:00 am WEST
1:00 am ADT
5:00 am WEST
2:00 am ADT
6:00 am WEST
3:00 am ADT
7:00 am WEST
4:00 am ADT
8:00 am WEST
5:00 am ADT
9:00 am WEST
6:00 am ADT
10:00 am WEST
7:00 am ADT
11:00 am WEST
8:00 am ADT
12:00 pm WEST
9:00 am ADT
1:00 pm WEST
10:00 am ADT
2:00 pm WEST
11:00 am ADT
3:00 pm WEST
12:00 pm ADT
4:00 pm WEST
1:00 pm ADT
5:00 pm WEST
2:00 pm ADT
6:00 pm WEST
3:00 pm ADT
7:00 pm WEST
4:00 pm ADT
8:00 pm WEST
5:00 pm ADT
9:00 pm WEST
6:00 pm ADT
10:00 pm WEST
7:00 pm ADT
11:00 pm WEST
8:00 pm ADT
12:00 am WEST+1 day
9:00 pm ADT
1:00 am WEST+1 day
10:00 pm ADT
2:00 am WEST+1 day
11:00 pm ADT
3:00 am WEST+1 day

Scheduling between the two

Working hours overlap from 9:00 am to 2:00 pm ADT, which is 1:00 pm to 6:00 pm WEST. 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 (ADT) is used in Nova Scotia, New Brunswick and Puerto Rico

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

Other conversions