Altadena to Chicago time converter

Chicago is 2 hours ahead of Altadena. When it is 9:00 AM in Altadena, it is 11:00 AM in Chicago.

Altadena PDT

Saturday, October 17, 2026

Chicago CDT

Saturday, October 17, 2026

Altadena
California, United States
Sat, Oct 17
PDTUTC-7
Chicago
Illinois, United States
Sat, Oct 17
CDTUTC-5+2h
Finding your time zone…
Shared working hours (9:00–18:00)

Altadena to Chicago conversion table

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

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

Best time to call or meet

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

Daylight saving time and the difference

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

  • Oct 17, 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 17, 2027: +2h

Distance

Altadena and Chicago are 2,786 km (1,731 miles) apart in a straight line.

More conversions

Chicago to AltadenaAltadena to New YorkAltadena to LondonAltadena to Los AngelesAltadena to TorontoAltadena to São PauloAltadena to ParisAltadena to BerlinAltadena to MoscowAltadena to DubaiAltadena to New DelhiAltadena to BangkokAltadena to Singapore
New York to ChicagoLondon to ChicagoLos Angeles to ChicagoToronto to ChicagoSão Paulo to ChicagoParis to ChicagoBerlin to ChicagoMoscow to ChicagoDubai to ChicagoNew Delhi to ChicagoBangkok to ChicagoSingapore to Chicago

Questions and answers

What is the time difference between Altadena and Chicago?

Chicago is 2 hours ahead of Altadena.

What time is it in Chicago when it is 9 AM in Altadena?

When it is 9:00 AM in Altadena, it is 11:00 AM in Chicago.

When is the best time to call Chicago from Altadena?

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

Does the time difference between Altadena and Chicago change?

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