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 Thursday, 17 September 2026: day of Jupiter
- Sunrise
- 07:30
- Sunset
- 20:00
- Next sunrise
- 07:32
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter07:30 – 08:33
- 2♂︎ Mars08:33 – 09:35
- 3☉︎ Sun09:35 – 10:38
- 4♀︎ Venus10:38 – 11:40
- 5☿︎ Mercury11:40 – 12:43
- 6☽︎ Moon12:43 – 13:45
- 7♄︎ Saturn13:45 – 14:48
- 8♃︎ Jupiter14:48 – 15:50
- 9♂︎ Mars15:50 – 16:53
- 10☉︎ Sun16:53 – 17:55
- 11♀︎ Venus17:55 – 18:58
- 12☿︎ Mercury18:58 – 20:00
Night
- 1☽︎ Moon20:00 – 20:58
- 2♄︎ Saturn20:58 – 21:55
- 3♃︎ Jupiter21:55 – 22:53
- 4♂︎ Mars22:53 – 23:51
- 5☉︎ Sun23:51 – 00:48
- 6♀︎ Venus00:48 – 01:46
- 7☿︎ Mercury01:46 – 02:44
- 8☽︎ Moon02:44 – 03:41
- 9♄︎ Saturn03:41 – 04:39
- 10♃︎ Jupiter04:39 – 05:36
- 11♂︎ Mars05:36 – 06:34
- 12☉︎ Sun06:34 – 07:32
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Thursday, 17 September 2026, the Sun rises at 07:30 and sets at 20:00: the day lasts 12h 30m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 07:32, lasts 11h 32m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Jupiter, from 07:30 to 08:33: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.