Istanbul to Round Lake time converter

Round Lake is 8 hours behind Istanbul. When it is 9:00 AM in Istanbul, it is 1:00 AM in Round Lake.

Istanbul TRT

Wednesday, October 21, 2026

Round Lake CDT

Tuesday, October 20, 2026

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

Istanbul to Round Lake conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 21, 2026 – Nov 1, 2026: -8h
  • Nov 1, 2026 – Mar 14, 2027: -9h
  • Mar 14, 2027 – Oct 21, 2027: -8h

Distance

Istanbul and Round Lake are 8,799 km (5,467 miles) apart in a straight line.

More conversions

Round Lake 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 Round LakeLondon to Round LakeLos Angeles to Round LakeChicago to Round LakeToronto to Round LakeSão Paulo to Round LakeParis to Round LakeBerlin to Round LakeMoscow to Round LakeDubai to Round LakeNew Delhi to Round LakeBangkok to Round Lake

Questions and answers

What is the time difference between Istanbul and Round Lake?

Round Lake is 8 hours behind Istanbul.

What time is it in Round Lake when it is 9 AM in Istanbul?

When it is 9:00 AM in Istanbul, it is 1:00 AM in Round Lake.

When is the best time to call Round Lake from Istanbul?

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

Does the time difference between Istanbul and Round Lake change?

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