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, 16 December 2026: day of Mercury
- Sunrise
- 05:05
- Sunset
- 19:18
- Next sunrise
- 05:05
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Australia/Perth).
Day
- 1☿︎ Mercury05:05 – 06:16
- 2☽︎ Moon06:16 – 07:27
- 3♄︎ Saturn07:27 – 08:38
- 4♃︎ Jupiter08:38 – 09:49
- 5♂︎ Mars09:49 – 11:00
- 6☉︎ Sun11:00 – 12:12
- 7♀︎ Venus12:12 – 13:23
- 8☿︎ Mercury13:23 – 14:34
- 9☽︎ Moon14:34 – 15:45
- 10♄︎ Saturn15:45 – 16:56
- 11♃︎ Jupiter16:56 – 18:07
- 12♂︎ Mars18:07 – 19:18
Night
- 1☉︎ Sun19:18 – 20:07
- 2♀︎ Venus20:07 – 20:56
- 3☿︎ Mercury20:56 – 21:45
- 4☽︎ Moon21:45 – 22:34
- 5♄︎ Saturn22:34 – 23:23
- 6♃︎ Jupiter23:23 – 00:12
- 7♂︎ Mars00:12 – 01:01
- 8☉︎ Sun01:01 – 01:49
- 9♀︎ Venus01:49 – 02:38
- 10☿︎ Mercury02:38 – 03:27
- 11☽︎ Moon03:27 – 04:16
- 12♄︎ Saturn04:16 – 05:05
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Wednesday, 16 December 2026, the Sun rises at 05:05 and sets at 19:18: 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?
Mercury, 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: 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.