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 Thursday, 17 December 2026: day of Jupiter
- Sunrise
- 05:05
- Sunset
- 19:19
- Next sunrise
- 05:05
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Australia/Perth).
Day
- 1♃︎ Jupiter05:05 – 06:16
- 2♂︎ Mars06:16 – 07:27
- 3☉︎ Sun07:27 – 08:38
- 4♀︎ Venus08:38 – 09:50
- 5☿︎ Mercury09:50 – 11:01
- 6☽︎ Moon11:01 – 12:12
- 7♄︎ Saturn12:12 – 13:23
- 8♃︎ Jupiter13:23 – 14:34
- 9♂︎ Mars14:34 – 15:46
- 10☉︎ Sun15:46 – 16:57
- 11♀︎ Venus16:57 – 18:08
- 12☿︎ Mercury18:08 – 19:19
Night
- 1☽︎ Moon19:19 – 20:08
- 2♄︎ Saturn20:08 – 20:57
- 3♃︎ Jupiter20:57 – 21:46
- 4♂︎ Mars21:46 – 22:35
- 5☉︎ Sun22:35 – 23:23
- 6♀︎ Venus23:23 – 00:12
- 7☿︎ Mercury00:12 – 01:01
- 8☽︎ Moon01:01 – 01:50
- 9♄︎ Saturn01:50 – 02:39
- 10♃︎ Jupiter02:39 – 03:28
- 11♂︎ Mars03:28 – 04:16
- 12☉︎ Sun04:16 – 05:05
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Thursday, 17 December 2026, the Sun rises at 05:05 and sets at 19:19: the day lasts 14h 14m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:05, lasts 9h 46m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Jupiter, from 05:05 to 06:16: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.