Chicago to Guam time converter

Guam is 15 hours ahead of Chicago. When it is 9:00 AM in Chicago, it is 12:00 AM (Sat, Oct 17) in Guam.

Chicago CDT

Friday, October 16, 2026

Guam ChST

Saturday, October 17, 2026

Chicago
Illinois, United States
Fri, Oct 16
CDTUTC-5
Guam
Sat, Oct 17
ChSTUTC+10+15h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Guam conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Chicago (7:00 AM – 9:00 AM in Guam): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 16, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Oct 16, 2027: +15h

More conversions

Guam 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 GuamLondon to GuamLos Angeles to GuamToronto to GuamSão Paulo to GuamParis to GuamBerlin to GuamMoscow to GuamDubai to GuamNew Delhi to GuamBangkok to GuamSingapore to Guam

Questions and answers

What is the time difference between Chicago and Guam?

Guam is 15 hours ahead of Chicago.

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

When it is 9:00 AM in Chicago, it is 12:00 AM (Sat, Oct 17) in Guam.

When is the best time to call Guam from Chicago?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Chicago (7:00 AM – 9:00 AM in Guam): working hours on one side, early or late on the other.

Does the time difference between Chicago and Guam change?

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