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Time difference between London and Istanbul

Istanbul is 2 hours ahead of London

London, the United Kingdom is UTC · Istanbul, Türkiye is UTC+3 — 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 London goes forward on the last Sunday in March and back on the last Sunday in October and Istanbul does not change its clocks.

London / Istanbul clocksDifferenceHow long
summer / standard2 hours aheadabout 30 weeks
standard / standard3 hours aheadabout 22 weeks

Istanbul stays put all year while London moves, so a meeting fixed in Istanbul's calendar shifts by an hour twice a year at London's end.

When they can both be at their desks

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

London to Istanbul, hour by hour

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

On the usual gap of 2 hours.

Frequently asked questions

What is the time difference between London and Istanbul?

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

Is Istanbul ahead of London?

Yes — Istanbul is 2 hours ahead. London is UTC and Istanbul is UTC+3 on standard time.

What time is 9 AM in London in Istanbul?

11:00 AM, on the usual gap.

When can London and Istanbul meet?

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

Other pairs

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