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 Sunday, 18 October 2026: day of the Sun
- Sunrise
- 08:16
- Sunset
- 18:56
- Next sunrise
- 08:18
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/Paris).
Day
- 1☉︎ Sun08:16 – 09:10
- 2♀︎ Venus09:10 – 10:03
- 3☿︎ Mercury10:03 – 10:56
- 4☽︎ Moon10:56 – 11:49
- 5♄︎ Saturn11:49 – 12:43
- 6♃︎ Jupiter12:43 – 13:36
- 7♂︎ Mars13:36 – 14:29
- 8☉︎ Sun14:29 – 15:23
- 9♀︎ Venus15:23 – 16:16
- 10☿︎ Mercury16:16 – 17:09
- 11☽︎ Moon17:09 – 18:02
- 12♄︎ Saturn18:02 – 18:56
Night
- 1♃︎ Jupiter18:56 – 20:02
- 2♂︎ Mars20:02 – 21:09
- 3☉︎ Sun21:09 – 22:16
- 4♀︎ Venus22:16 – 23:23
- 5☿︎ Mercury23:23 – 00:30
- 6☽︎ Moon00:30 – 01:37
- 7♄︎ Saturn01:37 – 02:44
- 8♃︎ Jupiter02:44 – 03:50
- 9♂︎ Mars03:50 – 04:57
- 10☉︎ Sun04:57 – 06:04
- 11♀︎ Venus06:04 – 07:11
- 12☿︎ Mercury07:11 – 08:18
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Sunday, 18 October 2026, the Sun rises at 08:16 and sets at 18:56: the day lasts 10h 39m, that is twelve day hours of 53 min. The night, until the next sunrise at 08:18, lasts 13h 22m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
The Sun, from 08:16 to 09:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.