Longest and shortest day in Tainan
In Tainan, Taiwan, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 13h 33m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 10h 43m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 06:03 | 18:10 | 12h 7m |
| June solstice | Sunday, 21 June 2026 | 05:14 | 18:47 | 13h 33m |
| September equinox | Tuesday, 22 September 2026 | 05:47 | 17:55 | 12h 8m |
| December solstice | Monday, 21 December 2026 | 06:35 | 17:18 | 10h 43m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 06:42 | 17:34 | 10h 52m |
| February | 06:31 | 17:55 | 11h 23m |
| March | 06:08 | 18:08 | 11h 59m |
| April | 05:39 | 18:19 | 12h 40m |
| May | 05:18 | 18:32 | 13h 14m |
| June | 05:13 | 18:45 | 13h 32m |
| July | 05:22 | 18:47 | 13h 25m |
| August | 05:35 | 18:31 | 12h 56m |
| September | 05:45 | 18:03 | 12h 17m |
| October | 05:55 | 17:33 | 11h 38m |
| November | 06:12 | 17:14 | 11h 3m |
| December | 06:32 | 17:16 | 10h 44m |
Why the day gets longer and shorter in Tainan
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Tainan 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 Tainan sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Tainan
When is the longest day in Tainan?
The longest day in Tainan falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 13h 33m of daylight, sunrise at 05:14 and sunset at 18:47.
When is the shortest day in Tainan?
The shortest day in Tainan falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 10h 43m of daylight, sunrise at 06:35 and sunset at 17:18.
How much does day length change through the year in Tainan?
Between the longest and shortest day, Tainan gains and loses about 2h 50m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Tainan's coordinates with SunCalc, not looked up from a table.