Longest and shortest day in Haiphong
In Haiphong, Vietnam, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 13h 24m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 10h 52m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 05:57 | 18:04 | 12h 7m |
| June solstice | Sunday, 21 June 2026 | 05:12 | 18:37 | 13h 24m |
| September equinox | Tuesday, 22 September 2026 | 05:41 | 17:49 | 12h 8m |
| December solstice | Monday, 21 December 2026 | 06:25 | 17:17 | 10h 52m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 06:32 | 17:32 | 11h 0m |
| February | 06:23 | 17:51 | 11h 28m |
| March | 06:02 | 18:02 | 12h 0m |
| April | 05:35 | 18:12 | 12h 37m |
| May | 05:16 | 18:23 | 13h 7m |
| June | 05:11 | 18:35 | 13h 24m |
| July | 05:20 | 18:37 | 13h 17m |
| August | 05:32 | 18:23 | 12h 51m |
| September | 05:40 | 17:56 | 12h 16m |
| October | 05:48 | 17:29 | 11h 41m |
| November | 06:03 | 17:12 | 11h 9m |
| December | 06:21 | 17:14 | 10h 53m |
Why the day gets longer and shorter in Haiphong
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Haiphong 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 Haiphong sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Haiphong
When is the longest day in Haiphong?
The longest day in Haiphong falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 13h 24m of daylight, sunrise at 05:12 and sunset at 18:37.
When is the shortest day in Haiphong?
The shortest day in Haiphong falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 10h 52m of daylight, sunrise at 06:25 and sunset at 17:17.
How much does day length change through the year in Haiphong?
Between the longest and shortest day, Haiphong gains and loses about 2h 32m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Haiphong's coordinates with SunCalc, not looked up from a table.