Alton to Istanbul time converter

Istanbul is 8 hours ahead of Alton. When it is 9:00 AM in Alton, it is 5:00 PM in Istanbul.

Alton CDT

Tuesday, October 20, 2026

Istanbul TRT

Wednesday, October 21, 2026

Alton
Illinois, United States
Tue, Oct 20
CDTUTC-5
Istanbul
Turkey
Wed, Oct 21
TRTUTC+3+8h
Finding your time zone…
Shared working hours (9:00–18:00)

Alton to Istanbul conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 20, 2026 – Nov 1, 2026: +8h
  • Nov 1, 2026 – Mar 14, 2027: +9h
  • Mar 14, 2027 – Oct 20, 2027: +8h

Distance

Alton and Istanbul are 9,202 km (5,718 miles) apart in a straight line.

More conversions

Istanbul to AltonAlton to New YorkAlton to LondonAlton to Los AngelesAlton to ChicagoAlton to TorontoAlton to São PauloAlton to ParisAlton to BerlinAlton to MoscowAlton to DubaiAlton to New DelhiAlton to Bangkok
New York to IstanbulLondon to IstanbulLos Angeles to IstanbulChicago to IstanbulToronto to IstanbulSão Paulo to IstanbulParis to IstanbulBerlin to IstanbulMoscow to IstanbulDubai to IstanbulNew Delhi to IstanbulBangkok to Istanbul

Questions and answers

What is the time difference between Alton and Istanbul?

Istanbul is 8 hours ahead of Alton.

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

When it is 9:00 AM in Alton, it is 5:00 PM in Istanbul.

When is the best time to call Istanbul from Alton?

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

Does the time difference between Alton and Istanbul change?

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