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 Tuesday, 30 December 2025: day of Mars
- Sunrise
- 08:45
- Sunset
- 17:02
- Next sunrise
- 08:45
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:45 – 09:27
- 2☉︎ Sun09:27 – 10:08
- 3♀︎ Venus10:08 – 10:50
- 4☿︎ Mercury10:50 – 11:31
- 5☽︎ Moon11:31 – 12:12
- 6♄︎ Saturn12:12 – 12:54
- 7♃︎ Jupiter12:54 – 13:35
- 8♂︎ Mars13:35 – 14:17
- 9☉︎ Sun14:17 – 14:58
- 10♀︎ Venus14:58 – 15:40
- 11☿︎ Mercury15:40 – 16:21
- 12☽︎ Moon16:21 – 17:02
Night
- 1♄︎ Saturn17:02 – 18:21
- 2♃︎ Jupiter18:21 – 19:40
- 3♂︎ Mars19:40 – 20:58
- 4☉︎ Sun20:58 – 22:17
- 5♀︎ Venus22:17 – 23:35
- 6☿︎ Mercury23:35 – 00:54
- 7☽︎ Moon00:54 – 02:12
- 8♄︎ Saturn02:12 – 03:31
- 9♃︎ Jupiter03:31 – 04:50
- 10♂︎ Mars04:50 – 06:08
- 11☉︎ Sun06:08 – 07:27
- 12♀︎ Venus07:27 – 08:45
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Tuesday, 30 December 2025, the Sun rises at 08:45 and sets at 17:02: the day lasts 8h 17m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:45, lasts 15h 43m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Mars, from 08:45 to 09:27: 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.