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 Tuesday, 16 December 2025: day of Mars
- Sunrise
- 08:45
- Sunset
- 16:56
- Next sunrise
- 08:46
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:45 – 09:26
- 2☉︎ Sun09:26 – 10:07
- 3♀︎ Venus10:07 – 10:48
- 4☿︎ Mercury10:48 – 11:29
- 5☽︎ Moon11:29 – 12:10
- 6♄︎ Saturn12:10 – 12:51
- 7♃︎ Jupiter12:51 – 13:32
- 8♂︎ Mars13:32 – 14:13
- 9☉︎ Sun14:13 – 14:53
- 10♀︎ Venus14:53 – 15:34
- 11☿︎ Mercury15:34 – 16:15
- 12☽︎ Moon16:15 – 16:56
Night
- 1♄︎ Saturn16:56 – 18:15
- 2♃︎ Jupiter18:15 – 19:35
- 3♂︎ Mars19:35 – 20:54
- 4☉︎ Sun20:54 – 22:13
- 5♀︎ Venus22:13 – 23:32
- 6☿︎ Mercury23:32 – 00:51
- 7☽︎ Moon00:51 – 02:10
- 8♄︎ Saturn02:10 – 03:29
- 9♃︎ Jupiter03:29 – 04:49
- 10♂︎ Mars04:49 – 06:08
- 11☉︎ Sun06:08 – 07:27
- 12♀︎ Venus07:27 – 08:46
Other cities · France
Questions
How are the planetary hours calculated in Rouen?
On Tuesday, 16 December 2025, the Sun rises at 08:45 and sets at 16:56: the day lasts 8h 11m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:46, lasts 15h 50m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Mars, from 08:45 to 09:26: 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.