Semboku
Sunrise and sunset in Semboku
Today’s sunrise, sunset and twilight in Semboku, in local time. At 39.7° N, the day lasts from 9 h 21 min at the winter solstice to 14 h 59 min at the summer solstice.
Today · worked out at
Thursday, October 22: sunrise at 05:54, sunset at 16:48.
Day length 10 h 54 min, 2 min 27 s shorter than yesterday.
Solar noon at 11:21, with the Sun 39° above the horizon.
Times are Semboku time (GMT+9).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 04:23 | 18:18 |
| Nautical twilight | 04:55 | 17:47 |
| Civil twilight | 05:26 | 17:15 |
| Sunrise and sunset | 05:54 | 16:48 |
| Golden hour | 05:54–06:31 | 16:11–16:48 |
Each twilight begins at the morning time and ends at the evening one.
The year in Semboku
- Longest day: June 21, 14 h 59 min, from sunrise at 04:09 to sunset at 19:08.
- Shortest day: December 22, 9 h 21 min, from sunrise at 06:54 to sunset at 16:16.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 06:53 | 16:43 | 9 h 50 min |
| February 21 | 06:22 | 17:19 | 10 h 57 min |
| March 21 | 05:39 | 17:49 | 12 h 10 min |
| April 21 | 04:51 | 18:20 | 13 h 29 min |
| May 21 | 04:17 | 18:49 | 14 h 32 min |
| June 21 | 04:09 | 19:08 | 14 h 59 min |
| July 21 | 04:26 | 19:00 | 14 h 34 min |
| August 21 | 04:54 | 18:25 | 13 h 31 min |
| September 21 | 05:23 | 17:36 | 12 h 13 min |
| October 21 | 05:52 | 16:49 | 10 h 57 min |
| November 21 | 06:27 | 16:17 | 9 h 50 min |
| December 21 | 06:54 | 16:15 | 9 h 21 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 39.7° N, 140.7° 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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