World Timezones

Belfast to Istanbul Converter

Compare Istanbul to Belfast instead

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Offset

2 hours

Belfast (GMT+1) is currently behind Istanbul (GMT+3).

GMT+1: UTC+1

GMT+3: UTC+3

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

When to schedule

Business-hours overlap: 9 AM–4 PM in Belfast (11 AM–6 PM in Istanbul).

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

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

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

About these zones

Belfast uses Greenwich Mean Time (GMT, or BST).

Istanbul uses Turkey Time (TRT).

Belfast and Istanbul are approximately 1,850 miles apart.

Quick reference

Full 24-hour conversion table.

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

Daylight saving time

Belfast observes daylight saving time; Istanbul does not. The offset between the two zones changes when Belfast transitions: on Sunday, October 25, 2026, clocks fall back from GMT+1 to GMT.

Daylight today

Belfast
Sunrise
5:01 AM
Sunset
9:42 PM
Day length
16h 41m
Istanbul
Sunrise
5:38 AM
Sunset
8:26 PM
Day length
14h 48m

Daylight overlap: 13h 25m — 5:01 AM–6:26 PM in Belfast (7:01 AM–8:26 PM in Istanbul). Both locations are in daylight during this window.

Cities in these zones

Other cities in Greenwich Mean Time

Airports in these zones

Airports in Greenwich Mean Time

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

Airports in Turkey Time

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

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