Daylight hours in Khulna
Khulna gets 13h 32m of daylight on its longest day in June, and 10h 45m on its shortest in December — a difference of 2h 47m across the year.
How fast the days change
Around 17 March, Khulna gains or loses about 1.3 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/Dhaka local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 06:44 | 17:37 | 10h 53m | 12:11 |
| February | 06:33 | 17:57 | 11h 24m | 12:15 |
| March | 06:10 | 18:10 | 12h 00m | 12:10 |
| April | 05:41 | 18:22 | 12h 41m | 12:01 |
| May | 05:21 | 18:35 | 13h 14m | 11:58 |
| June | 05:16 | 18:47 | 13h 32m | 12:02 |
| July | 05:25 | 18:49 | 13h 24m | 12:07 |
| August | 05:38 | 18:34 | 12h 56m | 12:06 |
| September | 05:48 | 18:05 | 12h 17m | 11:57 |
| October | 05:58 | 17:36 | 11h 38m | 11:47 |
| November | 06:14 | 17:17 | 11h 03m | 11:46 |
| December | 06:34 | 17:19 | 10h 45m | 11:56 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:05 | 18:12 | 12h 07m |
| June solstice | 21 Jun | 05:17 | 18:49 | 13h 32m |
| September equinox | 22 Sep | 05:50 | 17:58 | 12h 08m |
| December solstice | 21 Dec | 06:37 | 17:21 | 10h 44m |
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 Bangladesh
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.