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, 18 August 2026: day of Mars
- Sunrise
- 06:50
- Sunset
- 17:51
- Next sunrise
- 06:48
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Australia/Perth).
Day
- 1♂︎ Mars06:50 – 07:45
- 2☉︎ Sun07:45 – 08:40
- 3♀︎ Venus08:40 – 09:35
- 4☿︎ Mercury09:35 – 10:30
- 5☽︎ Moon10:30 – 11:25
- 6♄︎ Saturn11:25 – 12:20
- 7♃︎ Jupiter12:20 – 13:15
- 8♂︎ Mars13:15 – 14:10
- 9☉︎ Sun14:10 – 15:06
- 10♀︎ Venus15:06 – 16:01
- 11☿︎ Mercury16:01 – 16:56
- 12☽︎ Moon16:56 – 17:51
Night
- 1♄︎ Saturn17:51 – 18:56
- 2♃︎ Jupiter18:56 – 20:00
- 3♂︎ Mars20:00 – 21:05
- 4☉︎ Sun21:05 – 22:10
- 5♀︎ Venus22:10 – 23:15
- 6☿︎ Mercury23:15 – 00:20
- 7☽︎ Moon00:20 – 01:24
- 8♄︎ Saturn01:24 – 02:29
- 9♃︎ Jupiter02:29 – 03:34
- 10♂︎ Mars03:34 – 04:39
- 11☉︎ Sun04:39 – 05:44
- 12♀︎ Venus05:44 – 06:48
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Tuesday, 18 August 2026, the Sun rises at 06:50 and sets at 17:51: the day lasts 11h 01m, that is twelve day hours of 55 min. The night, until the next sunrise at 06:48, lasts 12h 58m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Mars, from 06:50 to 07:45: 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.