Daylight hours in Da Nang
Da Nang gets 13h 05m of daylight on its longest day in June, and 11h 11m on its shortest in December — a difference of 1h 54m across the year.
How fast the days change
Around 22 March, Da Nang gains or loses about 0.9 minutes of daylight every day.
Barely perceptible — near the equator the length of the day hardly changes at all, and the seasons announce themselves through rain and heat instead.
Sunrise and sunset by month
On the 15th of each month, in Asia/Ho_Chi_Minh local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 06:18 | 17:34 | 11h 16m | 11:56 |
| February | 06:12 | 17:49 | 11h 37m | 12:01 |
| March | 05:55 | 17:57 | 12h 02m | 11:56 |
| April | 05:32 | 18:02 | 12h 30m | 11:47 |
| May | 05:17 | 18:09 | 12h 53m | 11:43 |
| June | 05:15 | 18:19 | 13h 05m | 11:47 |
| July | 05:23 | 18:22 | 13h 00m | 11:53 |
| August | 05:31 | 18:11 | 12h 40m | 11:51 |
| September | 05:35 | 17:49 | 12h 14m | 11:42 |
| October | 05:39 | 17:26 | 11h 47m | 11:32 |
| November | 05:50 | 17:13 | 11h 23m | 11:31 |
| December | 06:06 | 17:17 | 11h 11m | 11:42 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 05:51 | 17:57 | 12h 07m |
| June solstice | 21 Jun | 05:16 | 18:21 | 13h 05m |
| September equinox | 22 Sep | 05:36 | 17:43 | 12h 08m |
| December solstice | 21 Dec | 06:09 | 17:20 | 11h 10m |
The equinoxes give almost exactly twelve hours of daylight everywhere on earth — "almost" because sunrise is defined by the sun's upper edge rather than its centre, and the atmosphere bends its light over the horizon before it has really arrived. Both lengthen the day by a few minutes.
Other cities in Vietnam
Assumptions
- Sea-level horizon. Hills, mountains and buildings all delay sunrise and bring sunset forward, sometimes by a lot in a valley.
- Standard refraction. Sunrise is taken at −0.833°, allowing for the sun's disc and average atmospheric bending. Unusual air conditions shift it by a minute or two.
- Local clock time, with daylight saving applied from the IANA timezone database.