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 Wednesday, 9 December 2026: day of Mercury
- Sunrise
- 08:33
- Sunset
- 16:54
- Next sunrise
- 08:34
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury08:33 – 09:15
- 2☽︎ Moon09:15 – 09:57
- 3♄︎ Saturn09:57 – 10:38
- 4♃︎ Jupiter10:38 – 11:20
- 5♂︎ Mars11:20 – 12:02
- 6☉︎ Sun12:02 – 12:43
- 7♀︎ Venus12:43 – 13:25
- 8☿︎ Mercury13:25 – 14:07
- 9☽︎ Moon14:07 – 14:49
- 10♄︎ Saturn14:49 – 15:30
- 11♃︎ Jupiter15:30 – 16:12
- 12♂︎ Mars16:12 – 16:54
Night
- 1☉︎ Sun16:54 – 18:12
- 2♀︎ Venus18:12 – 19:30
- 3☿︎ Mercury19:30 – 20:49
- 4☽︎ Moon20:49 – 22:07
- 5♄︎ Saturn22:07 – 23:26
- 6♃︎ Jupiter23:26 – 00:44
- 7♂︎ Mars00:44 – 02:02
- 8☉︎ Sun02:02 – 03:21
- 9♀︎ Venus03:21 – 04:39
- 10☿︎ Mercury04:39 – 05:57
- 11☽︎ Moon05:57 – 07:16
- 12♄︎ Saturn07:16 – 08:34
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Wednesday, 9 December 2026, the Sun rises at 08:33 and sets at 16:54: the day lasts 8h 20m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:34, lasts 15h 41m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 08:33 to 09:15: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.