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 Friday, 18 December 2026: day of Venus
- Sunrise
- 08:41
- Sunset
- 16:55
- Next sunrise
- 08:41
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1♀︎ Venus08:41 – 09:22
- 2☿︎ Mercury09:22 – 10:03
- 3☽︎ Moon10:03 – 10:44
- 4♄︎ Saturn10:44 – 11:25
- 5♃︎ Jupiter11:25 – 12:07
- 6♂︎ Mars12:07 – 12:48
- 7☉︎ Sun12:48 – 13:29
- 8♀︎ Venus13:29 – 14:10
- 9☿︎ Mercury14:10 – 14:51
- 10☽︎ Moon14:51 – 15:32
- 11♄︎ Saturn15:32 – 16:13
- 12♃︎ Jupiter16:13 – 16:55
Night
- 1♂︎ Mars16:55 – 18:14
- 2☉︎ Sun18:14 – 19:32
- 3♀︎ Venus19:32 – 20:51
- 4☿︎ Mercury20:51 – 22:10
- 5☽︎ Moon22:10 – 23:29
- 6♄︎ Saturn23:29 – 00:48
- 7♃︎ Jupiter00:48 – 02:07
- 8♂︎ Mars02:07 – 03:26
- 9☉︎ Sun03:26 – 04:45
- 10♀︎ Venus04:45 – 06:04
- 11☿︎ Mercury06:04 – 07:23
- 12☽︎ Moon07:23 – 08:41
Other cities · France
Questions
How are the planetary hours calculated in Cergy-Pontoise?
On Friday, 18 December 2026, the Sun rises at 08:41 and sets at 16:55: the day lasts 8h 14m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:41, lasts 15h 47m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Venus, from 08:41 to 09:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.