Longest and shortest day in Guankou
In Guankou, China, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 13h 56m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 10h 21m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 06:29 | 18:36 | 12h 7m |
| June solstice | Sunday, 21 June 2026 | 05:29 | 19:25 | 13h 56m |
| September equinox | Tuesday, 22 September 2026 | 06:13 | 18:22 | 12h 9m |
| December solstice | Monday, 21 December 2026 | 07:12 | 17:34 | 10h 21m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:18 | 17:51 | 10h 33m |
| February | 07:03 | 18:15 | 11h 12m |
| March | 06:35 | 18:33 | 11h 58m |
| April | 06:01 | 18:50 | 12h 49m |
| May | 05:35 | 19:08 | 13h 32m |
| June | 05:28 | 19:23 | 13h 55m |
| July | 05:38 | 19:24 | 13h 46m |
| August | 05:55 | 19:04 | 13h 9m |
| September | 06:10 | 18:30 | 12h 20m |
| October | 06:25 | 17:56 | 11h 31m |
| November | 06:47 | 17:32 | 10h 46m |
| December | 07:09 | 17:31 | 10h 22m |
Why the day gets longer and shorter in Guankou
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Guankou leans toward the Sun for part of the year and away for the rest. When it leans toward the Sun the days lengthen and the Sun climbs higher; half a year later the opposite happens. The size of the swing depends on how far Guankou sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Guankou
When is the longest day in Guankou?
The longest day in Guankou falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 13h 56m of daylight, sunrise at 05:29 and sunset at 19:25.
When is the shortest day in Guankou?
The shortest day in Guankou falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 10h 21m of daylight, sunrise at 07:12 and sunset at 17:34.
How much does day length change through the year in Guankou?
Between the longest and shortest day, Guankou gains and loses about 3h 35m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Guankou's coordinates with SunCalc, not looked up from a table.