Sao Tome and Principe to Chicago time converter

Chicago is 5 hours behind Sao Tome and Principe. When it is 9:00 AM in Sao Tome and Principe, it is 4:00 AM in Chicago.

Sao Tome and Principe UTC+0

Thursday, October 22, 2026

Chicago CDT

Wednesday, October 21, 2026

Thu, Oct 22
UTC+0
Illinois, United States
Wed, Oct 21
CDTUTC-5-5h
Finding your time zone…

12:11 AM in Sao Tome and Principe, Thursday, October 22, 2026

Shared working hours (9:00–18:00)

Sao Tome and Principe to Chicago conversion table

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

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

Best time to call or meet

Both sides are at work from 2:00 PM – 6:00 PM in Sao Tome and Principe (9:00 AM – 1:00 PM in Chicago).

Daylight saving time and the difference

The difference changes during the year because Sao Tome and Principe and Chicago switch clocks on different dates:

  • Oct 22, 2026 – Nov 1, 2026: -5h
  • Nov 1, 2026 – Mar 14, 2027: -6h
  • Mar 14, 2027 – Oct 22, 2027: -5h

More conversions

Questions and answers

What is the time difference between Sao Tome and Principe and Chicago?

Chicago is 5 hours behind Sao Tome and Principe.

What time is it in Chicago when it is 9 AM in Sao Tome and Principe?

When it is 9:00 AM in Sao Tome and Principe, it is 4:00 AM in Chicago.

When is the best time to call Chicago from Sao Tome and Principe?

Both sides are at work from 2:00 PM – 6:00 PM in Sao Tome and Principe (9:00 AM – 1:00 PM in Chicago).

Does the time difference between Sao Tome and Principe 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.