Cheonan
Sunrise and sunset in Cheonan
Today’s sunrise, sunset and twilight in Cheonan, in local time. At 36.8° N, the day lasts from 9 h 38 min at the winter solstice to 14 h 41 min at the summer solstice.
Today · worked out at
Thursday, October 22: sunrise at 06:44, sunset at 17:46.
Day length 11 h 01 min, 2 min 12 s shorter than yesterday.
Solar noon at 12:15, with the Sun 42° above the horizon.
Times are Cheonan time (GMT+9).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 05:18 | 19:12 |
| Nautical twilight | 05:48 | 18:42 |
| Civil twilight | 06:18 | 18:12 |
| Sunrise and sunset | 06:44 | 17:46 |
| Golden hour | 06:44–07:20 | 17:10–17:46 |
Each twilight begins at the morning time and ends at the evening one.
The year in Cheonan
- Longest day: June 21, 14 h 41 min, from sunrise at 05:12 to sunset at 19:53.
- Shortest day: December 22, 9 h 38 min, from sunrise at 07:40 to sunset at 17:18.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 07:41 | 17:44 | 10 h 03 min |
| February 21 | 07:13 | 18:17 | 11 h 04 min |
| March 21 | 06:34 | 18:43 | 12 h 09 min |
| April 21 | 05:50 | 19:10 | 13 h 21 min |
| May 21 | 05:19 | 19:36 | 14 h 17 min |
| June 21 | 05:12 | 19:53 | 14 h 41 min |
| July 21 | 05:28 | 19:47 | 14 h 19 min |
| August 21 | 05:53 | 19:15 | 13 h 23 min |
| September 21 | 06:18 | 18:30 | 12 h 12 min |
| October 21 | 06:43 | 17:47 | 11 h 04 min |
| November 21 | 07:15 | 17:18 | 10 h 04 min |
| December 21 | 07:40 | 17:18 | 9 h 38 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 36.8° N, 127.2° E, 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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