Iyo
Sunrise and sunset in Iyo, Japan
Sunrise, sunset and twilight for Iyo today, in local time. At 33.8° N, days run from 9 h 55 min at the winter solstice to 14 h 24 min at the summer solstice.
Today · worked out at
In Iyo, Japan on Friday, October 23, the Sun rises at 06:20 and sets at 17:26.
Day length 11 h 06 min, 1 min 57 s shorter than yesterday.
Solar noon at 11:53, with the Sun 45° above the horizon.
Times are Iyo time (GMT+9).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 04:56 | 18:49 |
| Nautical twilight | 05:25 | 18:20 |
| Civil twilight | 05:54 | 17:51 |
| Sunrise and sunset | 06:20 | 17:26 |
| Golden hour | 06:20–06:54 | 16:52–17:26 |
Each twilight begins at the morning time and ends at the evening one.
The year in Iyo
- Longest day: June 21, 14 h 24 min, from sunrise at 04:58 to sunset at 19:22.
- Shortest day: December 22, 9 h 55 min, from sunrise at 07:10 to sunset at 17:04.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 07:12 | 17:28 | 10 h 17 min |
| February 21 | 06:47 | 17:58 | 11 h 11 min |
| March 21 | 06:12 | 18:21 | 12 h 09 min |
| April 21 | 05:31 | 18:44 | 13 h 13 min |
| May 21 | 05:04 | 19:07 | 14 h 03 min |
| June 21 | 04:58 | 19:22 | 14 h 24 min |
| July 21 | 05:13 | 19:17 | 14 h 04 min |
| August 21 | 05:35 | 18:49 | 13 h 14 min |
| September 21 | 05:56 | 18:08 | 12 h 12 min |
| October 21 | 06:18 | 17:28 | 11 h 10 min |
| November 21 | 06:46 | 17:03 | 10 h 17 min |
| December 21 | 07:09 | 17:04 | 9 h 55 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 33.8° N, 132.7° 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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