Chicago to Costa Mesa time converter

Costa Mesa is 2 hours behind Chicago. When it is 9:00 AM in Chicago, it is 7:00 AM in Costa Mesa.

Chicago CDT

Sunday, October 18, 2026

Costa Mesa PDT

Sunday, October 18, 2026

Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5
Costa Mesa
California, United States
Sun, Oct 18
PDTUTC-7-2h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Costa Mesa conversion table

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

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

Best time to call or meet

Both sides are at work from 11:00 AM – 6:00 PM in Chicago (9:00 AM – 4:00 PM in Costa Mesa).

Daylight saving time and the difference

The difference changes during the year because Chicago and Costa Mesa switch clocks on different dates:

  • Oct 18, 2026 – Nov 1, 2026: -2h
  • Nov 1, 2026 – Nov 1, 2026: -1h
  • Nov 1, 2026 – Mar 14, 2027: -2h
  • Mar 14, 2027 – Mar 14, 2027: -3h
  • Mar 14, 2027 – Oct 18, 2027: -2h

Distance

Chicago and Costa Mesa are 2,796 km (1,737 miles) apart in a straight line.

More conversions

Costa Mesa to ChicagoChicago to New YorkChicago to LondonChicago to Los AngelesChicago to TorontoChicago to São PauloChicago to ParisChicago to BerlinChicago to MoscowChicago to DubaiChicago to New DelhiChicago to BangkokChicago to Singapore
New York to Costa MesaLondon to Costa MesaLos Angeles to Costa MesaToronto to Costa MesaSão Paulo to Costa MesaParis to Costa MesaBerlin to Costa MesaMoscow to Costa MesaDubai to Costa MesaNew Delhi to Costa MesaBangkok to Costa MesaSingapore to Costa Mesa

Questions and answers

What is the time difference between Chicago and Costa Mesa?

Costa Mesa is 2 hours behind Chicago.

What time is it in Costa Mesa when it is 9 AM in Chicago?

When it is 9:00 AM in Chicago, it is 7:00 AM in Costa Mesa.

When is the best time to call Costa Mesa from Chicago?

Both sides are at work from 11:00 AM – 6:00 PM in Chicago (9:00 AM – 4:00 PM in Costa Mesa).

Does the time difference between Chicago and Costa Mesa change?

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