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What is AST in TRT?

Turkey Time is 7 hours ahead

Atlantic Time is on UTC−4:00 and Turkey Time is on UTC+3:00 right now. The gap changes during the year — see below.

Convert a time

TRT — Turkey Time

1:00 pm

TRT, Fri

Time in Halifax
6:00:43 AM
Time in Istanbul
1:00:43 PM
Difference
+7 h
Next clock change
March 14, 2027

When the difference changes

Atlantic Time and Turkey 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, 2027Turkey Time is 7 hours ahead
  2. March 14, 2027 – November 7, 2027Turkey Time is 6 hours ahead
  3. November 7, 2027 – onwardsTurkey Time is 7 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, 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.

Turkey Time

No clock changes

Turkey Time stays on TRT all year, so its offset from UTC never moves.

AST to TRT conversion table

Every hour of Friday, November 13, 2026, converted from Atlantic Time to Turkey Time. 7 of the 24 hours fall on a different calendar day in Istanbul, which is marked.

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

Scheduling between the two

Working hours overlap from 9:00 am to 11:00 am AST, which is 4:00 pm to 6:00 pm TRT. 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

Turkey Time (TRT) is used in all of Türkiye, on a permanent UTC+3 since 2016

Other conversions