Planetary hours
in Rennes.
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, 11 October 2025: day of Saturn
- Sunrise
- 08:20
- Sunset
- 19:25
- Next sunrise
- 08:21
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:20 – 09:15
- 2♃︎ Jupiter09:15 – 10:11
- 3♂︎ Mars10:11 – 11:06
- 4☉︎ Sun11:06 – 12:02
- 5♀︎ Venus12:02 – 12:57
- 6☿︎ Mercury12:57 – 13:52
- 7☽︎ Moon13:52 – 14:48
- 8♄︎ Saturn14:48 – 15:43
- 9♃︎ Jupiter15:43 – 16:39
- 10♂︎ Mars16:39 – 17:34
- 11☉︎ Sun17:34 – 18:30
- 12♀︎ Venus18:30 – 19:25
Night
- 1☿︎ Mercury19:25 – 20:30
- 2☽︎ Moon20:30 – 21:34
- 3♄︎ Saturn21:34 – 22:39
- 4♃︎ Jupiter22:39 – 23:44
- 5♂︎ Mars23:44 – 00:48
- 6☉︎ Sun00:48 – 01:53
- 7♀︎ Venus01:53 – 02:58
- 8☿︎ Mercury02:58 – 04:03
- 9☽︎ Moon04:03 – 05:07
- 10♄︎ Saturn05:07 – 06:12
- 11♃︎ Jupiter06:12 – 07:17
- 12♂︎ Mars07:17 – 08:21
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Saturday, 11 October 2025, the Sun rises at 08:20 and sets at 19:25: the day lasts 11h 05m, that is twelve day hours of 55 min. The night, until the next sunrise at 08:21, lasts 12h 56m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Saturn, from 08:20 to 09:15: 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.