What is EET in AST?

Atlantic Time is 6 hours behind

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

Time in Athens: 3:03:35 PM
Time in Halifax: 9:03:35 AM
Difference: −6 h
Next clock change: October 25, 2026

Convert a time

EEST — Eastern European Time

ADT — Atlantic Time

9:00 am

ADT, Fri

When the difference changes

Eastern 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:

Now – October 25, 2026Atlantic Time is 6 hours behind
October 25, 2026 – November 1, 2026Atlantic Time is 5 hours behind
November 1, 2026 – March 14, 2027Atlantic Time is 6 hours behind
March 14, 2027 – March 28, 2027Atlantic Time is 5 hours behind
March 28, 2027 – onwardsAtlantic Time is 6 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

Eastern European Time

Sunday, October 25, 2026

Clocks go back one hour — 4:00 am becomes 3:00 am local time, and the zone is on EET after that.

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.

EET to AST conversion table

Every hour of Friday, September 25, 2026, converted from Eastern European Time to Atlantic Time. 6 of the 24 hours fall on a different calendar day in Halifax, which is marked.

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

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

Scheduling between the two

Working hours overlap from 3:00 pm to 6:00 pm EEST, which is 9:00 am to 12:00 pm ADT. 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.

Eastern European Time (EEST) is used in Helsinki, Bucharest, Kyiv and Cairo

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