Mason City
Sunrise and sunset in Mason City
Today’s sunrise, sunset and twilight in Mason City, in local time. At 43.2° N, the day lasts from 8 h 59 min at the winter solstice to 15 h 23 min at the summer solstice.
Today · worked out at
Wednesday, October 21: sunrise at 07:33, sunset at 18:20.
Day length 10 h 46 min, 2 min 47 s shorter than yesterday.
Solar noon at 12:57, with the Sun 36° above the horizon.
Times are Mason City time (CDT).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 05:58 | 19:55 |
| Nautical twilight | 06:31 | 19:22 |
| Civil twilight | 07:04 | 18:49 |
| Sunrise and sunset | 07:33 | 18:20 |
| Golden hour | 07:33–08:13 | 17:40–18:20 |
Each twilight begins at the morning time and ends at the evening one.
The year in Mason City
- Longest day: June 21, 15 h 23 min, from sunrise at 05:33 to sunset at 20:56.
- Shortest day: December 21, 8 h 59 min, from sunrise at 07:41 to sunset at 16:40.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 07:37 | 17:10 | 9 h 33 min |
| February 21 | 07:01 | 17:51 | 10 h 50 min |
| March 21 | 07:14 | 19:26 | 12 h 12 min |
| April 21 | 06:20 | 20:02 | 13 h 42 min |
| May 21 | 05:43 | 20:36 | 14 h 53 min |
| June 21 | 05:33 | 20:56 | 15 h 23 min |
| July 21 | 05:52 | 20:45 | 14 h 53 min |
| August 21 | 06:25 | 20:05 | 13 h 41 min |
| September 21 | 06:59 | 19:11 | 12 h 13 min |
| October 21 | 07:33 | 18:20 | 10 h 46 min |
| November 21 | 07:13 | 16:43 | 9 h 31 min |
| December 21 | 07:41 | 16:40 | 8 h 59 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 43.2° N, 93.2° 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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