Kosai
Sunrise and sunset in Kosai, Japan
Sunrise, sunset and twilight for Kosai today, in local time. At 34.7° N, days run from 9 h 50 min at the winter solstice to 14 h 29 min at the summer solstice.
Today · worked out at
The Sun is up from 06:01 to 17:06 in Kosai, Japan on Friday, October 23.
Day length 11 h 04 min, 2 min 2 s shorter than yesterday.
Solar noon at 11:34, with the Sun 44° above the horizon.
Times are Kosai time (GMT+9).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 04:37 | 18:30 |
| Nautical twilight | 05:06 | 18:01 |
| Civil twilight | 05:36 | 17:31 |
| Sunrise and sunset | 06:01 | 17:06 |
| Golden hour | 06:01–06:36 | 16:31–17:06 |
Each twilight begins at the morning time and ends at the evening one.
The year in Kosai
- Longest day: June 21, 14 h 29 min, from sunrise at 04:37 to sunset at 19:06.
- Shortest day: December 22, 9 h 50 min, from sunrise at 06:53 to sunset at 16:43.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 06:54 | 17:07 | 10 h 13 min |
| February 21 | 06:29 | 17:38 | 11 h 09 min |
| March 21 | 05:52 | 18:01 | 12 h 09 min |
| April 21 | 05:11 | 18:26 | 13 h 15 min |
| May 21 | 04:43 | 18:50 | 14 h 07 min |
| June 21 | 04:37 | 19:06 | 14 h 29 min |
| July 21 | 04:51 | 19:00 | 14 h 09 min |
| August 21 | 05:14 | 18:31 | 13 h 17 min |
| September 21 | 05:36 | 17:48 | 12 h 12 min |
| October 21 | 06:00 | 17:08 | 11 h 08 min |
| November 21 | 06:29 | 16:41 | 10 h 13 min |
| December 21 | 06:52 | 16:42 | 9 h 50 min |
Good to know
- Sunrise and sunset mark the moment the Sun’s upper edge touches a level horizon, with the air’s usual bending of light allowed for. Hills, buildings and altitude move 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 34.7° N, 137.5° 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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