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, 21 August 2026: day of Venus
- Sunrise
- 06:46
- Sunset
- 17:53
- Next sunrise
- 06:45
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Australia/Perth).
Day
- 1♀︎ Venus06:46 – 07:42
- 2☿︎ Mercury07:42 – 08:37
- 3☽︎ Moon08:37 – 09:33
- 4♄︎ Saturn09:33 – 10:28
- 5♃︎ Jupiter10:28 – 11:24
- 6♂︎ Mars11:24 – 12:19
- 7☉︎ Sun12:19 – 13:15
- 8♀︎ Venus13:15 – 14:11
- 9☿︎ Mercury14:11 – 15:06
- 10☽︎ Moon15:06 – 16:02
- 11♄︎ Saturn16:02 – 16:57
- 12♃︎ Jupiter16:57 – 17:53
Night
- 1♂︎ Mars17:53 – 18:57
- 2☉︎ Sun18:57 – 20:01
- 3♀︎ Venus20:01 – 21:06
- 4☿︎ Mercury21:06 – 22:10
- 5☽︎ Moon22:10 – 23:15
- 6♄︎ Saturn23:15 – 00:19
- 7♃︎ Jupiter00:19 – 01:23
- 8♂︎ Mars01:23 – 02:28
- 9☉︎ Sun02:28 – 03:32
- 10♀︎ Venus03:32 – 04:36
- 11☿︎ Mercury04:36 – 05:41
- 12☽︎ Moon05:41 – 06:45
Other cities · Australia
Questions
How are the planetary hours calculated in Perth?
On Friday, 21 August 2026, the Sun rises at 06:46 and sets at 17:53: the day lasts 11h 06m, that is twelve day hours of 56 min. The night, until the next sunrise at 06:45, lasts 12h 52m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Venus, from 06:46 to 07:42: 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.