World Timezones

Istanbul to London Converter

Compare London to Istanbul instead
Istanbul7:36 amFri, Jun 5
IstanbulTRT
Turkey · UTC+3
7:36 amFri, Jun 5
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
LondonBST
ENG, United Kingdom · UTC+1
5:36 amFri, Jun 5
10p
11p
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p

Offset

The time difference between Istanbul and London is 2 hours.

2 hours

Istanbul (TRT) is ahead of London (BST).

TRT: UTC+3

BST: UTC+1

London is currently observing daylight saving time; Istanbul is not.

When to schedule

Business-hours overlap: 11 AM–5 PM in Istanbul (9 AM–3 PM in London).

Both teams are in working hours during this window on weekdays.

Suggested time: 2:00 PM Istanbul (12:00 PM London).

This window may shift by an hour during daylight saving time.

Public holidays in 2026

National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.

Turkey

  • New Year's DayThu, Jan 1
  • National Independence & Children's DayThu, Apr 23
  • Labour DayFri, May 1
  • Atatürk Commemoration & Youth DayTue, May 19
  • Democracy and National Unity DayWed, Jul 15
  • Victory DaySun, Aug 30
  • Republic DayThu, Oct 29

United Kingdom

  • Good FridayFri, Apr 3
  • Early May Bank HolidayMon, May 4
  • Spring Bank HolidayMon, May 25
  • Christmas DayFri, Dec 25
  • St. Stephen's DayMon, Dec 28

About these zones

Istanbul uses Turkey Time (TRT). To call Turkey, dial +90.

London uses Greenwich Mean Time (GMT, or BST). To call United Kingdom, dial +44.

London is approximately 1,550 miles northwest of Istanbul.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

IstanbulLondonDay
12:00 am10:00 pm-1 day
1:00 am11:00 pm-1 day
2:00 am12:00 amSame day
3:00 am1:00 amSame day
4:00 am2:00 amSame day
5:00 am3:00 amSame day
6:00 am4:00 amSame day
7:00 am5:00 amSame day
8:00 am6:00 amSame day
9:00 am7:00 amSame day
10:00 am8:00 amSame day
11:00 am9:00 amSame day
12:00 pm10:00 amSame day
1:00 pm11:00 amSame day
2:00 pm12:00 pmSame day
3:00 pm1:00 pmSame day
4:00 pm2:00 pmSame day
5:00 pm3:00 pmSame day
6:00 pm4:00 pmSame day
7:00 pm5:00 pmSame day
8:00 pm6:00 pmSame day
9:00 pm7:00 pmSame day
10:00 pm8:00 pmSame day
11:00 pm9:00 pmSame day

Daylight saving time

London observes daylight saving time; Istanbul does not. The offset between the two zones changes when London transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.

See the daylight saving time page for transition dates across every time zone.

Daylight today

Istanbul
Sunrise
5:34 AM
Sunset
8:33 PM
Day length
14h 59m
London
Sunrise
4:47 AM
Sunset
9:13 PM
Day length
16h 25m

Daylight overlap: 13h 46m — 6:47 AM–8:33 PM in Istanbul (4:47 AM–6:33 PM in London). Both locations are in daylight during this window.

Cities in these zones

Browse all cities to see the current local time anywhere.

Airports in these zones

Airports in Turkey Time

  • IST
  • SAW
  • ESB
  • YEI
  • ADB
  • GZT
  • DIY
  • ADA
  • COV
  • ASR

Airports in Greenwich Mean Time

  • LCY
  • LGW
  • LHR
  • LTN
  • STN
  • BHX
  • EMA
  • GLA
  • PIK
  • LBA

Related conversions

Common conversions

What is 9:00 am Istanbul in London?
9:00 am Istanbul is 7:00 am London.
What is 12:00 pm Istanbul in London?
12:00 pm Istanbul is 10:00 am London.
What is 12:30 pm Istanbul in London?
12:30 pm Istanbul is 10:30 am London.
What is 2:00 pm Istanbul in London?
2:00 pm Istanbul is 12:00 pm London.
What is 5:00 pm Istanbul in London?
5:00 pm Istanbul is 3:00 pm London.
What is 11:30 pm Istanbul in London?
11:30 pm Istanbul is 9:30 pm London.