Time Difference Between Istanbul and London
As of 31 August 2026, London is 2 hours behind Istanbul. That number is not constant. Over the course of a year, because of daylight saving changes, London, United Kingdom ranges from 3 hours behind to 2 hours behind relative to Istanbul, Turkey. The calculator below is always up to date.
Tap either box to search any country or city.
Istanbul, Turkey
01:34
Tue, Sep 1, 2026
UTC+3 · Europe/Istanbul
London, United Kingdom
-2h23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
London is 2 hours behind Istanbul.
When it is 01:34 in Istanbul, it is already the previous day in London.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Istanbul | Tuesday, September 1, 2026 | Europe/Istanbul | UTC+3 | Not observed |
| London | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
Hour by hour: Istanbul to London
Every hour of today in Istanbul and what it is in London. Highlighted rows fall inside London working hours (09:00–18:00).
| Istanbul | London |
|---|---|
| 00:00 | 22:00prev day |
| 01:00 | 23:00prev day |
| 02:00 | 00:00 |
| 03:00 | 01:00 |
| 04:00 | 02:00 |
| 05:00 | 03:00 |
| 06:00 | 04:00 |
| 07:00 | 05:00 |
| 08:00 | 06:00 |
| 09:00 | 07:00 |
| 10:00 | 08:00 |
| 11:00 | 09:00 |
| Istanbul | London |
|---|---|
| 12:00 | 10:00 |
| 13:00 | 11:00 |
| 14:00 | 12:00 |
| 15:00 | 13:00 |
| 16:00 | 14:00 |
| 17:00 | 15:00 |
| 18:00 | 16:00 |
| 19:00 | 17:00 |
| 20:00 | 18:00 |
| 21:00 | 19:00 |
| 22:00 | 20:00 |
| 23:00 | 21:00 |
Best time to call or meet
Overlapping working hours
11:00–18:00 in Istanbul (09:00–16:00 in London)
Both places are inside 09:00–18:00 for 7 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
10:00–21:00 in Istanbul (08:00–19:00 in London)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
London puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, London is 3 hours behind Istanbul — instead of 2 hours behind, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Istanbul and London: common questions
What is the time difference between Istanbul and London?
As of 31 August 2026, London is 2 hours behind Istanbul. The gap is not fixed: across the year, London ranges from 3 hours behind to 2 hours behind relative to Istanbul, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Istanbul, what time is it in London?
It is 07:00 AM in London, United Kingdom. Use the time field in the calculator above to check any other hour.
Is London ahead of or behind Istanbul?
London is behind Istanbul by 2 hours at the moment. In practical terms, the working day in London starts and ends later in Istanbul terms.
Do Istanbul and London observe daylight saving time?
London changes its clocks twice a year; Istanbul does not. The difference therefore shifts by an hour when London switches: across the year, London ranges from 3 hours behind to 2 hours behind relative to Istanbul.
What is the best time to call London from Istanbul?
Working hours overlap between 11:00 and 18:00 Istanbul time, which is 09:00 to 16:00 in London. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Istanbul, Turkey (UTC+3) and London, United Kingdom (UTC+1) were generated on Monday, August 31, 2026 UTC and refresh in your browser.