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, 23 September 2025: day of Mars
- Sunrise
- 07:39
- Sunset
- 19:47
- Next sunrise
- 07:41
A day hour lasts 1h 01m; a night hour, 1h 00m. Local time (Europe/Paris).
Day
- 1♂︎ Mars07:39 – 08:40
- 2☉︎ Sun08:40 – 09:41
- 3♀︎ Venus09:41 – 10:41
- 4☿︎ Mercury10:41 – 11:42
- 5☽︎ Moon11:42 – 12:42
- 6♄︎ Saturn12:42 – 13:43
- 7♃︎ Jupiter13:43 – 14:44
- 8♂︎ Mars14:44 – 15:44
- 9☉︎ Sun15:44 – 16:45
- 10♀︎ Venus16:45 – 17:45
- 11☿︎ Mercury17:45 – 18:46
- 12☽︎ Moon18:46 – 19:47
Night
- 1♄︎ Saturn19:47 – 20:46
- 2♃︎ Jupiter20:46 – 21:46
- 3♂︎ Mars21:46 – 22:45
- 4☉︎ Sun22:45 – 23:45
- 5♀︎ Venus23:45 – 00:44
- 6☿︎ Mercury00:44 – 01:44
- 7☽︎ Moon01:44 – 02:43
- 8♄︎ Saturn02:43 – 03:43
- 9♃︎ Jupiter03:43 – 04:42
- 10♂︎ Mars04:42 – 05:42
- 11☉︎ Sun05:42 – 06:41
- 12♀︎ Venus06:41 – 07:41
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Tuesday, 23 September 2025, the Sun rises at 07:39 and sets at 19:47: the day lasts 12h 07m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:41, lasts 11h 54m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Mars, from 07:39 to 08:40: 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.