Ottawa, Illinois
Sunrise and sunset in Ottawa, Illinois
Today’s sunrise, sunset and twilight in Ottawa, Illinois, in local time. At 41.3° N, the day lasts from 9 h 11 min at the winter solstice to 15 h 10 min at the summer solstice.
Today · worked out at
Wednesday, October 21: sunrise at 07:14, sunset at 18:05.
Day length 10 h 51 min, 2 min 36 s shorter than yesterday.
Solar noon at 12:39, with the Sun 38° above the horizon.
Times are Ottawa, Illinois time (CDT).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 05:41 | 19:37 |
| Nautical twilight | 06:13 | 19:05 |
| Civil twilight | 06:45 | 18:33 |
| Sunrise and sunset | 07:14 | 18:05 |
| Golden hour | 07:14–07:52 | 17:27–18:05 |
Each twilight begins at the morning time and ends at the evening one.
The year in Ottawa, Illinois
- Longest day: June 21, 15 h 10 min, from sunrise at 05:22 to sunset at 20:32.
- Shortest day: December 21, 9 h 11 min, from sunrise at 07:17 to sunset at 16:29.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 07:15 | 16:58 | 9 h 42 min |
| February 21 | 06:41 | 17:36 | 10 h 55 min |
| March 21 | 06:56 | 19:08 | 12 h 12 min |
| April 21 | 06:06 | 19:42 | 13 h 36 min |
| May 21 | 05:31 | 20:13 | 14 h 42 min |
| June 21 | 05:22 | 20:32 | 15 h 10 min |
| July 21 | 05:40 | 20:22 | 14 h 43 min |
| August 21 | 06:10 | 19:45 | 13 h 35 min |
| September 21 | 06:41 | 18:54 | 12 h 12 min |
| October 21 | 07:14 | 18:05 | 10 h 51 min |
| November 21 | 06:50 | 16:31 | 9 h 40 min |
| December 21 | 07:17 | 16:29 | 9 h 11 min |
Good to know
- Sunrise and sunset are when the top of the Sun meets a level horizon, allowing for the usual bending of light by the air. Hills, buildings and height shift what you see by a few minutes.
- Civil, nautical and astronomical twilight end when the Sun is 6°, 12° and 18° below the horizon. Golden hour here is the photographers’ usual definition: the Sun less than 6° above it.
- Worked out when the page loads from NOAA’s solar equations, for 41.3° N, 88.8° W, and accurate to about a minute.
How the layers work, where their data comes from and what they can’t tell you: Day and night, live, The Sun, Moon and planets
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