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 Friday, 18 December 2026: day of Venus
- Sunrise
- 05:05
- Sunset
- 19:20
- Next sunrise
- 05:06
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Australia/Perth).
Day
- 1♀︎ Venus05:05 – 06:17
- 2☿︎ Mercury06:17 – 07:28
- 3☽︎ Moon07:28 – 08:39
- 4♄︎ Saturn08:39 – 09:50
- 5♃︎ Jupiter09:50 – 11:01
- 6♂︎ Mars11:01 – 12:13
- 7☉︎ Sun12:13 – 13:24
- 8♀︎ Venus13:24 – 14:35
- 9☿︎ Mercury14:35 – 15:46
- 10☽︎ Moon15:46 – 16:57
- 11♄︎ Saturn16:57 – 18:08
- 12♃︎ Jupiter18:08 – 19:20
Night
- 1♂︎ Mars19:20 – 20:09
- 2☉︎ Sun20:09 – 20:57
- 3♀︎ Venus20:57 – 21:46
- 4☿︎ Mercury21:46 – 22:35
- 5☽︎ Moon22:35 – 23:24
- 6♄︎ Saturn23:24 – 00:13
- 7♃︎ Jupiter00:13 – 01:02
- 8♂︎ Mars01:02 – 01:50
- 9☉︎ Sun01:50 – 02:39
- 10♀︎ Venus02:39 – 03:28
- 11☿︎ Mercury03:28 – 04:17
- 12☽︎ Moon04:17 – 05:06
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Friday, 18 December 2026, the Sun rises at 05:05 and sets at 19:20: the day lasts 14h 14m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 05:06, lasts 9h 46m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Venus, from 05:05 to 06:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.