Chicago to Watertown time converter

Watertown is 1 hour ahead of Chicago. When it is 9:00 AM in Chicago, it is 10:00 AM in Watertown.

Chicago CDT

Sunday, October 18, 2026

Watertown EDT

Sunday, October 18, 2026

Chicago
Illinois, United States
Sun, Oct 18
CDTUTC-5
Watertown
Massachusetts, United States
Sun, Oct 18
EDTUTC-4+1h
Finding your time zone…
Shared working hours (9:00–18:00)

Chicago to Watertown conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 5:00 PM in Chicago (10:00 AM – 6:00 PM in Watertown).

Daylight saving time and the difference

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

  • Oct 18, 2026 – Nov 1, 2026: +1h
  • Nov 1, 2026 – Nov 1, 2026: ±0
  • Nov 1, 2026 – Mar 14, 2027: +1h
  • Mar 14, 2027 – Mar 14, 2027: +2h
  • Mar 14, 2027 – Oct 18, 2027: +1h

Distance

Chicago and Watertown are 1,357 km (843 miles) apart in a straight line.

More conversions

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New York to WatertownLondon to WatertownLos Angeles to WatertownToronto to WatertownSão Paulo to WatertownParis to WatertownBerlin to WatertownMoscow to WatertownDubai to WatertownNew Delhi to WatertownBangkok to WatertownSingapore to Watertown

Questions and answers

What is the time difference between Chicago and Watertown?

Watertown is 1 hour ahead of Chicago.

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

When it is 9:00 AM in Chicago, it is 10:00 AM in Watertown.

When is the best time to call Watertown from Chicago?

Both sides are at work from 9:00 AM – 5:00 PM in Chicago (10:00 AM – 6:00 PM in Watertown).

Does the time difference between Chicago and Watertown change?

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