Longest and shortest day in Thuan An
In Thuan An, Vietnam, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 12h 46m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 11h 29m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 05:57 | 18:03 | 12h 6m |
| June solstice | Sunday, 21 June 2026 | 05:31 | 18:17 | 12h 46m |
| September equinox | Tuesday, 22 September 2026 | 05:42 | 17:49 | 12h 7m |
| December solstice | Monday, 21 December 2026 | 06:06 | 17:35 | 11h 29m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 06:15 | 17:49 | 11h 33m |
| February | 06:13 | 18:00 | 11h 47m |
| March | 06:00 | 18:03 | 12h 3m |
| April | 05:42 | 18:04 | 12h 22m |
| May | 05:30 | 18:08 | 12h 37m |
| June | 05:30 | 18:16 | 12h 46m |
| July | 05:37 | 18:20 | 12h 42m |
| August | 05:43 | 18:12 | 12h 29m |
| September | 05:42 | 17:54 | 12h 11m |
| October | 05:42 | 17:35 | 11h 54m |
| November | 05:48 | 17:26 | 11h 38m |
| December | 06:03 | 17:32 | 11h 30m |
Why the day gets longer and shorter in Thuan An
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Thuan An 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 Thuan An sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Thuan An
When is the longest day in Thuan An?
The longest day in Thuan An falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 12h 46m of daylight, sunrise at 05:31 and sunset at 18:17.
When is the shortest day in Thuan An?
The shortest day in Thuan An falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 11h 29m of daylight, sunrise at 06:06 and sunset at 17:35.
How much does day length change through the year in Thuan An?
Between the longest and shortest day, Thuan An gains and loses about 1h 17m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Thuan An's coordinates with SunCalc, not looked up from a table.