Daylight hours in Thimphu
Thimphu gets 13h 52m of daylight on its longest day in June, and 10h 25m on its shortest in December — a difference of 3h 27m across the year.
How fast the days change
Around 17 March, Thimphu gains or loses about 1.6 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/Thimphu local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 06:52 | 17:28 | 10h 36m | 12:10 |
| February | 06:38 | 17:52 | 11h 14m | 12:15 |
| March | 06:11 | 18:09 | 11h 59m | 12:10 |
| April | 05:37 | 18:25 | 12h 49m | 12:01 |
| May | 05:12 | 18:42 | 13h 30m | 11:57 |
| June | 05:05 | 18:57 | 13h 52m | 12:01 |
| July | 05:16 | 18:58 | 13h 43m | 12:07 |
| August | 05:32 | 18:39 | 13h 08m | 12:05 |
| September | 05:46 | 18:06 | 12h 20m | 11:56 |
| October | 06:01 | 17:33 | 11h 32m | 11:47 |
| November | 06:21 | 17:09 | 10h 48m | 11:45 |
| December | 06:43 | 17:08 | 10h 25m | 11:56 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:05 | 18:12 | 12h 07m |
| June solstice | 21 Jun | 05:06 | 18:59 | 13h 53m |
| September equinox | 22 Sep | 05:49 | 17:58 | 12h 09m |
| December solstice | 21 Dec | 06:47 | 17:11 | 10h 24m |
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.
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.