Planetary hours
in Rouen.
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, 17 December 2025: day of Mercury
- Sunrise
- 08:46
- Sunset
- 16:56
- Next sunrise
- 08:47
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury08:46 – 09:27
- 2☽︎ Moon09:27 – 10:08
- 3♄︎ Saturn10:08 – 10:49
- 4♃︎ Jupiter10:49 – 11:30
- 5♂︎ Mars11:30 – 12:10
- 6☉︎ Sun12:10 – 12:51
- 7♀︎ Venus12:51 – 13:32
- 8☿︎ Mercury13:32 – 14:13
- 9☽︎ Moon14:13 – 14:54
- 10♄︎ Saturn14:54 – 15:35
- 11♃︎ Jupiter15:35 – 16:16
- 12♂︎ Mars16:16 – 16:56
Night
- 1☉︎ Sun16:56 – 18:16
- 2♀︎ Venus18:16 – 19:35
- 3☿︎ Mercury19:35 – 20:54
- 4☽︎ Moon20:54 – 22:13
- 5♄︎ Saturn22:13 – 23:32
- 6♃︎ Jupiter23:32 – 00:52
- 7♂︎ Mars00:52 – 02:11
- 8☉︎ Sun02:11 – 03:30
- 9♀︎ Venus03:30 – 04:49
- 10☿︎ Mercury04:49 – 06:08
- 11☽︎ Moon06:08 – 07:28
- 12♄︎ Saturn07:28 – 08:47
Other cities · France
Questions
How are the planetary hours calculated in Rouen?
On Wednesday, 17 December 2025, the Sun rises at 08:46 and sets at 16:56: the day lasts 8h 10m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:47, lasts 15h 50m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Mercury, from 08:46 to 09:27: 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.