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 Wednesday, 21 October 2026: day of Mercury
- Sunrise
- 05:30
- Sunset
- 18:32
- Next sunrise
- 05:29
A day hour lasts 1h 05m; a night hour, 55 min. Local time (Australia/Perth).
Day
- 1☿︎ Mercury05:30 – 06:35
- 2☽︎ Moon06:35 – 07:40
- 3♄︎ Saturn07:40 – 08:45
- 4♃︎ Jupiter08:45 – 09:51
- 5♂︎ Mars09:51 – 10:56
- 6☉︎ Sun10:56 – 12:01
- 7♀︎ Venus12:01 – 13:06
- 8☿︎ Mercury13:06 – 14:11
- 9☽︎ Moon14:11 – 15:16
- 10♄︎ Saturn15:16 – 16:22
- 11♃︎ Jupiter16:22 – 17:27
- 12♂︎ Mars17:27 – 18:32
Night
- 1☉︎ Sun18:32 – 19:27
- 2♀︎ Venus19:27 – 20:21
- 3☿︎ Mercury20:21 – 21:16
- 4☽︎ Moon21:16 – 22:11
- 5♄︎ Saturn22:11 – 23:06
- 6♃︎ Jupiter23:06 – 00:00
- 7♂︎ Mars00:00 – 00:55
- 8☉︎ Sun00:55 – 01:50
- 9♀︎ Venus01:50 – 02:45
- 10☿︎ Mercury02:45 – 03:39
- 11☽︎ Moon03:39 – 04:34
- 12♄︎ Saturn04:34 – 05:29
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Wednesday, 21 October 2026, the Sun rises at 05:30 and sets at 18:32: the day lasts 13h 02m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 05:29, lasts 10h 57m: twelve night hours of 55 min.
Which planet rules the first hour that day?
Mercury, from 05:30 to 06:35: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.