Istanbul to Castricum time converter

Castricum is 1 hour behind Istanbul. When it is 9:00 AM in Istanbul, it is 8:00 AM in Castricum.

Istanbul TRT

Wednesday, October 21, 2026

Castricum CEST

Wednesday, October 21, 2026

Istanbul
Turkey
Wed, Oct 21
TRTUTC+3
Castricum
The Netherlands
Wed, Oct 21
CESTUTC+2-1h
Finding your time zone…
Shared working hours (9:00–18:00)

Istanbul to Castricum conversion table

Every hour of today in Istanbul and the matching time in Castricum. Light rows are typical working hours (9:00–18:00).

IstanbulCastricum
12:00 AM11:00 PM−1 day
1:00 AM12:00 AM
2:00 AM1:00 AM
3:00 AM2:00 AM
4:00 AM3:00 AM
5:00 AM4:00 AM
6:00 AM5:00 AM
7:00 AM6:00 AM
8:00 AM7:00 AM
9:00 AM8:00 AM
10:00 AM9:00 AM
11:00 AM10:00 AM
12:00 PM11:00 AM
1:00 PM12:00 PM
2:00 PM1:00 PM
3:00 PM2:00 PM
4:00 PM3:00 PM
5:00 PM4:00 PM
6:00 PM5:00 PM
7:00 PM6:00 PM
8:00 PM7:00 PM
9:00 PM8:00 PM
10:00 PM9:00 PM
11:00 PM10:00 PM

Best time to call or meet

Both sides are at work from 10:00 AM – 6:00 PM in Istanbul (9:00 AM – 5:00 PM in Castricum).

Daylight saving time and the difference

The difference changes during the year because Istanbul and Castricum switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -1h
  • Oct 25, 2026 – Mar 28, 2027: -2h
  • Mar 28, 2027 – Oct 21, 2027: -1h

Distance

Istanbul and Castricum are 2,233 km (1,388 miles) apart in a straight line.

More conversions

Castricum to IstanbulIstanbul to New YorkIstanbul to LondonIstanbul to Los AngelesIstanbul to ChicagoIstanbul to TorontoIstanbul to São PauloIstanbul to ParisIstanbul to BerlinIstanbul to MoscowIstanbul to DubaiIstanbul to New DelhiIstanbul to Bangkok
New York to CastricumLondon to CastricumLos Angeles to CastricumChicago to CastricumToronto to CastricumSão Paulo to CastricumParis to CastricumBerlin to CastricumMoscow to CastricumDubai to CastricumNew Delhi to CastricumBangkok to Castricum

Questions and answers

What is the time difference between Istanbul and Castricum?

Castricum is 1 hour behind Istanbul.

What time is it in Castricum when it is 9 AM in Istanbul?

When it is 9:00 AM in Istanbul, it is 8:00 AM in Castricum.

When is the best time to call Castricum from Istanbul?

Both sides are at work from 10:00 AM – 6:00 PM in Istanbul (9:00 AM – 5:00 PM in Castricum).

Does the time difference between Istanbul and Castricum change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.