World Timezones

Köln to Istanbul Converter

Compare Istanbul to Köln instead

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Offset

1 hour

Köln (GMT+2) is currently behind Istanbul (GMT+3).

GMT+2: UTC+2

GMT+3: UTC+3

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

When to schedule

Business-hours overlap: 9 AM–5 PM in Köln (10 AM–6 PM in Istanbul).

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

Suggested time: 1:00 PM Köln (2:00 PM Istanbul).

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

About these zones

Köln uses Europe/Berlin.

Istanbul uses Turkey Time (TRT).

Köln and Istanbul are approximately 1,250 miles apart.

Quick reference

Full 24-hour conversion table.

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

Daylight saving time

Köln observes daylight saving time; Istanbul does not. The offset between the two zones changes when Köln transitions: on Sunday, October 25, 2026, clocks fall back from GMT+2 to GMT+1.

Daylight today

Köln
Sunrise
5:29 AM
Sunset
9:31 PM
Day length
16h 2m
Istanbul
Sunrise
5:38 AM
Sunset
8:26 PM
Day length
14h 48m

Daylight overlap: 13h 57m — 5:29 AM–7:26 PM in Köln (6:29 AM–8:26 PM in Istanbul). Both locations are in daylight during this window.

Cities in these zones

Airports in these zones

Airports in Europe/Berlin

  • BER
  • HAM
  • LBC
  • MUC
  • CGN
  • DUS
  • FRA
  • STR

Airports in Turkey Time

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

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