Time Zone: Athens to London
Time zone difference between Athens and London. UTC offsets and best meeting times.
Time difference: Athens and London
Athens is on GMT+3 (UTC+3) and London is on GMT+1 (UTC+1), a gap of 2 hours. Athens is ahead — so when it is 12:00 in Athens, it is already 10:00 in London. Going the other way, when it is 12:00 in London, it is only 14:00 in Athens.
For calls, video meetings or messages between Athens and London, aim for the overlap in normal waking hours on both sides rather than assuming a shared 9-to-5 — with a 2h gap, one side may need to join early morning or late evening. Business hours in London typically start later than in Athens, so scheduling around late morning to early afternoon in the behind city usually finds the widest overlap.
Note that this 2h difference reflects current UTC offsets and can shift by an hour around daylight saving time (DST) clock changes if only one city observes it. If you are flying this route, check our jet lag calculator for Athens to London to plan sleep adjustment, and the flight time tool to work out local arrival time.
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Frequently Asked Questions
What is the time difference between Athens and London?
The time difference between Athens (UTC+3) and London (UTC+1) is 2 hours. London is 2h behind Athens.
What time zone is London in?
London is in the GMT+1 time zone (UTC+1).
What time zone is Athens in?
Athens is in the GMT+3 time zone (UTC+3).
Is London ahead of or behind Athens?
Athens is ahead. London is 2 hours behind Athens, so clocks in London show an earlier time than in Athens.
When it's noon in Athens, what time is it in London?
When it is 12:00 in Athens (UTC+3), it is 10:00 in London (UTC+1).
Does the time difference between Athens and London change with daylight saving time?
Possibly. This 2h difference is based on current UTC offsets. If only one of Athens or London observes daylight saving time (DST), the gap can shift by an hour on clock-change weekends in spring and autumn — worth double-checking close to your travel or call date.