Planetary hours
in Le Mans.
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 Saturday, 13 December 2025: day of Saturn
- Sunrise
- 08:40
- Sunset
- 17:06
- Next sunrise
- 08:41
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:40 – 09:22
- 2♃︎ Jupiter09:22 – 10:04
- 3♂︎ Mars10:04 – 10:47
- 4☉︎ Sun10:47 – 11:29
- 5♀︎ Venus11:29 – 12:11
- 6☿︎ Mercury12:11 – 12:53
- 7☽︎ Moon12:53 – 13:35
- 8♄︎ Saturn13:35 – 14:17
- 9♃︎ Jupiter14:17 – 14:59
- 10♂︎ Mars14:59 – 15:41
- 11☉︎ Sun15:41 – 16:23
- 12♀︎ Venus16:23 – 17:06
Night
- 1☿︎ Mercury17:06 – 18:24
- 2☽︎ Moon18:24 – 19:41
- 3♄︎ Saturn19:41 – 20:59
- 4♃︎ Jupiter20:59 – 22:17
- 5♂︎ Mars22:17 – 23:35
- 6☉︎ Sun23:35 – 00:53
- 7♀︎ Venus00:53 – 02:11
- 8☿︎ Mercury02:11 – 03:29
- 9☽︎ Moon03:29 – 04:47
- 10♄︎ Saturn04:47 – 06:05
- 11♃︎ Jupiter06:05 – 07:23
- 12♂︎ Mars07:23 – 08:41
Other cities · France
Questions
How are the planetary hours calculated in Le Mans?
On Saturday, 13 December 2025, the Sun rises at 08:40 and sets at 17:06: the day lasts 8h 25m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:41, lasts 15h 36m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Saturn, from 08:40 to 09:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.