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Sun times

Illinois · United States

Sunrise and Sunset Times Today in Ottawa, Illinois

· CDT (UTC−05:00)

Sunset in Ottawa is at 5:57 PM and sunrise is at 7:21 AM. There are 10h 36m of daylight.

Sunset

5:57 PM

253° W

Sunrise

7:21 AM

107° E

Daylight

10h 36m

0h 03m shorter than the previous day

Solar noon

12:39 PM

Sun altitude: 35.7°

SunriseSunset

Live countdown to the next sunrise or sunset

Times use the city center and a clear, level horizon. Hills, buildings and weather can change what you see.

Tomorrow in Ottawa

Wednesday, October 28, 2026: sunset 5:55 PM, sunrise 7:22 AM. Daylight: 10h 33m.


Twilight and golden hour

Morning light

  • Astronomical dawn (−18°)5:48 AM
  • Nautical dawn (−12°)6:20 AM
  • Civil dawn (−6°)6:53 AM
  • Golden hour (−4° to +6°)7:04 AM – 8:00 AM

Evening light

  • Golden hour (+6° to −4°)5:18 PM – 6:14 PM
  • Civil dusk (−6°)6:25 PM
  • Nautical dusk (−12°)6:58 PM
  • Astronomical dusk (−18°)7:30 PM

Golden hour is an approximate photography window, not a weather forecast. About twilight and light thresholds.

Local time in Ottawa

America/Chicago · CDT · UTC−05:00. Daylight saving time is in effect.

The next clock change is on Sunday, November 1, 2026, from UTC−05:00 to UTC−06:00. Times in the calendar already include this change.

Clock changes and regional exceptions in United States

IANA timezone data 2026e. Future rules can change; corrections are welcome.

Sunrise and sunset calendar for Ottawa


2026-10. Local times in America/Chicago; clock changes apply on their actual dates.
DateSunsetSunriseDaylight
6:37 PM6:52 AM11h 45m
6:35 PM6:53 AM11h 42m
6:34 PM6:54 AM11h 39m
6:32 PM6:55 AM11h 37m
6:30 PM6:56 AM11h 34m
6:29 PM6:58 AM11h 31m
6:27 PM6:59 AM11h 28m
6:25 PM7:00 AM11h 26m
6:24 PM7:01 AM11h 23m
6:22 PM7:02 AM11h 20m
6:21 PM7:03 AM11h 18m
6:19 PM7:04 AM11h 15m
6:17 PM7:05 AM11h 12m
6:16 PM7:06 AM11h 10m
6:14 PM7:07 AM11h 07m
6:13 PM7:08 AM11h 04m
6:11 PM7:10 AM11h 02m
6:10 PM7:11 AM10h 59m
6:08 PM7:12 AM10h 56m
6:07 PM7:13 AM10h 54m
6:05 PM7:14 AM10h 51m
6:04 PM7:15 AM10h 49m
6:02 PM7:16 AM10h 46m
6:01 PM7:18 AM10h 43m
6:00 PM7:19 AM10h 41m
5:58 PM7:20 AM10h 38m
5:57 PM7:21 AM10h 36m
5:55 PM7:22 AM10h 33m
5:54 PM7:23 AM10h 31m
5:53 PM7:25 AM10h 28m
5:52 PM7:26 AM10h 26m
Download 2026 calendar (CSV)

About these times

Calculation point
41.34559°, -88.84258°
Place reference
GeoNames 4905006

Sunrise and sunset use a solar-center altitude of −0.833°, including a standard allowance for refraction and the sun’s radius. The result is rounded to the nearest minute. Terrain and unusual atmospheric conditions are not modeled.

Sources, validation and limitations