Planetary hours
in Perth.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Tuesday, 23 December 2025: day of Mars
- Sunrise
- 05:08
- Sunset
- 19:22
- Next sunrise
- 05:08
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Australia/Perth).
Day
- 1♂︎ Mars05:08 – 06:19
- 2☉︎ Sun06:19 – 07:30
- 3♀︎ Venus07:30 – 08:41
- 4☿︎ Mercury08:41 – 09:53
- 5☽︎ Moon09:53 – 11:04
- 6♄︎ Saturn11:04 – 12:15
- 7♃︎ Jupiter12:15 – 13:26
- 8♂︎ Mars13:26 – 14:38
- 9☉︎ Sun14:38 – 15:49
- 10♀︎ Venus15:49 – 17:00
- 11☿︎ Mercury17:00 – 18:11
- 12☽︎ Moon18:11 – 19:22
Night
- 1♄︎ Saturn19:22 – 20:11
- 2♃︎ Jupiter20:11 – 21:00
- 3♂︎ Mars21:00 – 21:49
- 4☉︎ Sun21:49 – 22:38
- 5♀︎ Venus22:38 – 23:27
- 6☿︎ Mercury23:27 – 00:15
- 7☽︎ Moon00:15 – 01:04
- 8♄︎ Saturn01:04 – 01:53
- 9♃︎ Jupiter01:53 – 02:42
- 10♂︎ Mars02:42 – 03:31
- 11☉︎ Sun03:31 – 04:19
- 12♀︎ Venus04:19 – 05:08
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Tuesday, 23 December 2025, the Sun rises at 05:08 and sets at 19:22: the day lasts 14h 15m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:08, lasts 9h 46m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mars, from 05:08 to 06:19: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.