Planetary hours
in Cergy-Pontoise.
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 Monday, 15 December 2025: day of the Moon
- Sunrise
- 08:39
- Sunset
- 16:54
- Next sunrise
- 08:40
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1☽︎ Moon08:39 – 09:20
- 2♄︎ Saturn09:20 – 10:01
- 3♃︎ Jupiter10:01 – 10:43
- 4♂︎ Mars10:43 – 11:24
- 5☉︎ Sun11:24 – 12:05
- 6♀︎ Venus12:05 – 12:46
- 7☿︎ Mercury12:46 – 13:28
- 8☽︎ Moon13:28 – 14:09
- 9♄︎ Saturn14:09 – 14:50
- 10♃︎ Jupiter14:50 – 15:31
- 11♂︎ Mars15:31 – 16:13
- 12☉︎ Sun16:13 – 16:54
Night
- 1♀︎ Venus16:54 – 18:13
- 2☿︎ Mercury18:13 – 19:31
- 3☽︎ Moon19:31 – 20:50
- 4♄︎ Saturn20:50 – 22:09
- 5♃︎ Jupiter22:09 – 23:28
- 6♂︎ Mars23:28 – 00:47
- 7☉︎ Sun00:47 – 02:06
- 8♀︎ Venus02:06 – 03:24
- 9☿︎ Mercury03:24 – 04:43
- 10☽︎ Moon04:43 – 06:02
- 11♄︎ Saturn06:02 – 07:21
- 12♃︎ Jupiter07:21 – 08:40
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Monday, 15 December 2025, the Sun rises at 08:39 and sets at 16:54: the day lasts 8h 15m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:40, lasts 15h 46m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
The Moon, from 08:39 to 09:20: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.