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Time difference between Istanbul and London

London is 2 hours behind Istanbul

Istanbul, Türkiye is UTC+3 · London, the United Kingdom is UTC — on standard time

The gap is not the same all year

Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Istanbul does not change its clocks and London goes forward on the last Sunday in March and back on the last Sunday in October.

Istanbul / London clocksDifferenceHow long
standard / summer2 hours behindabout 30 weeks
standard / standard3 hours behindabout 22 weeks

Istanbul stays put all year while London moves, so the gap changes twice a year from London's side alone. A recurring meeting set in Istanbul's calendar will drift by an hour without anyone touching it.

When they can both be at their desks

Nine-to-five in both cities overlaps for 6 hours — 11:00 AM to 5:00 PM in Istanbul, the same moment as 9:00 AM to 3:00 PM in London.

Istanbul to London, hour by hour

IstanbulLondon
12:00 AM10:00 PM (previous day)
1:00 AM11:00 PM (previous day)
2:00 AM12:00 AM
3:00 AM1:00 AM
4:00 AM2:00 AM
5:00 AM3:00 AM
6:00 AM4:00 AM
7:00 AM5:00 AM
8:00 AM6:00 AM
9:00 AM7:00 AM
10:00 AM8:00 AM
11:00 AM9:00 AM
12:00 PM10:00 AM
1:00 PM11:00 AM
2:00 PM12:00 PM
3:00 PM1:00 PM
4:00 PM2:00 PM
5:00 PM3:00 PM
6:00 PM4:00 PM
7:00 PM5:00 PM
8:00 PM6:00 PM
9:00 PM7:00 PM
10:00 PM8:00 PM
11:00 PM9:00 PM

On the usual gap of 2 hours.

Frequently asked questions

What is the time difference between Istanbul and London?

London is 2 hours behind Istanbul for most of the year. It is not the same all year — there is one other gap, because Istanbul does not change its clocks and London goes forward on the last Sunday in March and back on the last Sunday in October.

Is London ahead of Istanbul?

No — London is 2 hours behind. Istanbul is UTC+3 and London is UTC on standard time.

What time is 9 AM in Istanbul in London?

7:00 AM, on the usual gap.

When can Istanbul and London meet?

Standard nine-to-five hours overlap for 6 hours: 11:00 AM–5:00 PM in Istanbul, which is 9:00 AM–3:00 PM in London.

Other pairs

Every Istanbul pair · Every London pair · All city pairs · Time zones by abbreviation