Daylight hours in Antsirabe
Antsirabe gets 13h 19m of daylight on its longest day in December, and 10h 56m on its shortest in June — a difference of 2h 23m across the year.
How fast the days change
Around 17 March, Antsirabe gains or loses about 1.1 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 Indian/Antananarivo local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:25 | 18:37 | 13h 12m | 12:01 |
| February | 05:43 | 18:28 | 12h 44m | 12:05 |
| March | 05:54 | 18:07 | 12h 13m | 12:00 |
| April | 06:02 | 17:41 | 11h 38m | 11:51 |
| May | 06:12 | 17:23 | 11h 11m | 11:48 |
| June | 06:24 | 17:20 | 10h 56m | 11:52 |
| July | 06:26 | 17:29 | 11h 02m | 11:57 |
| August | 06:13 | 17:39 | 11h 26m | 11:56 |
| September | 05:47 | 17:46 | 11h 59m | 11:47 |
| October | 05:21 | 17:53 | 12h 32m | 11:37 |
| November | 05:04 | 18:07 | 13h 03m | 11:36 |
| December | 05:07 | 18:26 | 13h 19m | 11:46 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 05:55 | 18:03 | 12h 07m |
| June solstice | 21 Jun | 06:25 | 17:21 | 10h 56m |
| September equinox | 22 Sep | 05:41 | 17:47 | 12h 06m |
| December solstice | 21 Dec | 05:09 | 18:29 | 13h 20m |
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 Madagascar
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.