Planetary hours
in Aulnay-sous-Bois.
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 Tuesday, 9 December 2025: day of Mars
- Sunrise
- 08:31
- Sunset
- 16:52
- Next sunrise
- 08:32
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:31 – 09:13
- 2☉︎ Sun09:13 – 09:55
- 3♀︎ Venus09:55 – 10:37
- 4☿︎ Mercury10:37 – 11:18
- 5☽︎ Moon11:18 – 12:00
- 6♄︎ Saturn12:00 – 12:42
- 7♃︎ Jupiter12:42 – 13:24
- 8♂︎ Mars13:24 – 14:05
- 9☉︎ Sun14:05 – 14:47
- 10♀︎ Venus14:47 – 15:29
- 11☿︎ Mercury15:29 – 16:11
- 12☽︎ Moon16:11 – 16:52
Night
- 1♄︎ Saturn16:52 – 18:11
- 2♃︎ Jupiter18:11 – 19:29
- 3♂︎ Mars19:29 – 20:47
- 4☉︎ Sun20:47 – 22:06
- 5♀︎ Venus22:06 – 23:24
- 6☿︎ Mercury23:24 – 00:42
- 7☽︎ Moon00:42 – 02:01
- 8♄︎ Saturn02:01 – 03:19
- 9♃︎ Jupiter03:19 – 04:37
- 10♂︎ Mars04:37 – 05:56
- 11☉︎ Sun05:56 – 07:14
- 12♀︎ Venus07:14 – 08:32
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Questions
How are the planetary hours calculated in Aulnay-sous-Bois?
On Tuesday, 9 December 2025, the Sun rises at 08:31 and sets at 16:52: the day lasts 8h 21m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:32, lasts 15h 40m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mars, from 08:31 to 09:13: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.