July 21, 2026 · Tainan, Taiwan
Sunset in Tainan today is at 18:47. Day length is 13h 21m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Tainan's coordinates and updated daily.
Tainan lies at 23°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for Tainan.
The longest day in Tainan is around 13h 33m (around June 21). The shortest is around 10h 43m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:35 | 06:43 | 10h 52m |
| February | 17:56 | 06:33 | 11h 23m |
| March | 18:09 | 06:09 | 11h 59m |
| April | 18:20 | 05:40 | 12h 40m |
| May | 18:33 | 05:19 | 13h 14m |
| June | 18:46 | 05:14 | 13h 32m |
| July | 18:48 | 05:23 | 13h 25m |
| August | 18:33 | 05:36 | 12h 57m |
| September | 18:05 | 05:46 | 12h 18m |
| October | 17:35 | 05:56 | 11h 39m |
| November | 17:16 | 06:13 | 11h 3m |
| December | 17:17 | 06:33 | 10h 44m |