London to Istanbul — Time Zone Converter
GMT/BST (UTC+1) → TRT (UTC+3). Istanbul is 2 hours ahead relative to London right now.
London
Oct 7, 2026, 12:55 PM
Istanbul
Oct 7, 2026, 2:55 PM
Need the reverse? Istanbul to London →
Sample times — GMT/BST to TRT
Sample conversions for today; daylight saving applied.
About London and IstanbulLondon vs Istanbul time difference through 2026
The gap changes twice during 2026, because only London observes daylight saving time. Double-check meetings booked in the weeks around each switch.
Dates (2026) GMT/BST TRT Difference Jan 1 – Mar 28 UTC UTC+3 Istanbul is 3 hours ahead Mar 29 – Oct 24 UTC+1 UTC+3 Istanbul is 2 hours ahead Oct 25 – Dec 31 UTC UTC+3 Istanbul is 3 hours ahead
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
London vs Istanbul time difference through 2026
The gap changes twice during 2026, because only London observes daylight saving time. Double-check meetings booked in the weeks around each switch.
| Dates (2026) | GMT/BST | TRT | Difference |
|---|---|---|---|
| Jan 1 – Mar 28 | UTC | UTC+3 | Istanbul is 3 hours ahead |
| Mar 29 – Oct 24 | UTC+1 | UTC+3 | Istanbul is 2 hours ahead |
| Oct 25 – Dec 31 | UTC | UTC+3 | Istanbul is 3 hours ahead |
Transition dates are the first full day on the new offset; clocks usually change overnight, between 1:00 and 3:00 local time.
Method & sources
Offsets and daylight-saving dates are computed from the IANA Time Zone Database through the JavaScript Intl API — the same rules your phone and computer use. The year table above was generated from those rules when this page was built; the live converter uses the rules installed in your own browser, so it stays correct if a country changes its clocks.
Page last updated: October 1, 2026
London to Istanbul is two hours in winter and three in summer; Turkey holds UTC+3 permanently while the UK changes its clocks. Istanbul afternoons overlap comfortably with the London working day.
Frequently asked questions
What is the time difference between London and Istanbul?
Right now the offset is about 2 hours ahead (from GMT/BST to TRT). Daylight saving rules differ by region, so use the converter and table above rather than memorising a single number year-round.
Does daylight saving affect London vs Istanbul?
Yes, whenever either region springs forward or falls back, the gap can shift by an hour. This page uses the IANA time-zone database so those transitions are applied automatically.
How do I schedule a meeting across the United Kingdom and Turkey?
Pick a time in the converter, share both columns with attendees, and avoid early-morning or late-night slots on one side. The sample table lists common business hours in the source zone.
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