Daylight hours in Mandurah
Mandurah gets 14h 16m of daylight on its longest day in December, and 10h 01m on its shortest in June — a difference of 4h 15m across the year.
How fast the days change
Around 17 March, Mandurah gains or loses about 2.0 minutes of daylight every day.
Enough to notice over a fortnight, though the seasons arrive more gently here than further from the equator.
Sunrise and sunset by month
On the 15th of each month, in Australia/Perth local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:24 | 19:27 | 14h 03m | 12:26 |
| February | 05:54 | 19:08 | 13h 14m | 12:31 |
| March | 06:16 | 18:35 | 12h 19m | 12:26 |
| April | 06:38 | 17:56 | 11h 18m | 12:17 |
| May | 06:59 | 17:27 | 10h 28m | 12:13 |
| June | 07:16 | 17:18 | 10h 01m | 12:17 |
| July | 07:17 | 17:29 | 10h 12m | 12:23 |
| August | 06:54 | 17:49 | 10h 55m | 12:21 |
| September | 06:16 | 18:08 | 11h 52m | 12:12 |
| October | 05:37 | 18:28 | 12h 52m | 12:02 |
| November | 05:08 | 18:55 | 13h 47m | 12:01 |
| December | 05:03 | 19:20 | 14h 16m | 12:12 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:20 | 18:29 | 12h 09m |
| June solstice | 21 Jun | 07:18 | 17:19 | 10h 01m |
| September equinox | 22 Sep | 06:06 | 18:13 | 12h 06m |
| December solstice | 21 Dec | 05:06 | 19:23 | 14h 17m |
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 Australia
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.