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, 25 October 2025: day of Saturn
- Sunrise
- 08:41
- Sunset
- 18:59
- Next sunrise
- 07:42
A day hour lasts 52 min; a night hour, 1h 09m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:41 – 09:32
- 2♃︎ Jupiter09:32 – 10:24
- 3♂︎ Mars10:24 – 11:15
- 4☉︎ Sun11:15 – 12:07
- 5♀︎ Venus12:07 – 12:58
- 6☿︎ Mercury12:58 – 13:50
- 7☽︎ Moon13:50 – 14:41
- 8♄︎ Saturn14:41 – 15:33
- 9♃︎ Jupiter15:33 – 16:24
- 10♂︎ Mars16:24 – 17:16
- 11☉︎ Sun17:16 – 18:07
- 12♀︎ Venus18:07 – 18:59
Night
- 1☿︎ Mercury18:59 – 20:08
- 2☽︎ Moon20:08 – 21:16
- 3♄︎ Saturn21:16 – 22:25
- 4♃︎ Jupiter22:25 – 23:33
- 5♂︎ Mars23:33 – 00:42
- 6☉︎ Sun00:42 – 01:51
- 7♀︎ Venus01:51 – 02:59
- 8☿︎ Mercury02:59 – 03:08
- 9☽︎ Moon03:08 – 04:16
- 10♄︎ Saturn04:16 – 05:25
- 11♃︎ Jupiter05:25 – 06:34
- 12♂︎ Mars06:34 – 07:42
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Saturday, 25 October 2025, the Sun rises at 08:41 and sets at 18:59: the day lasts 10h 18m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:42, lasts 13h 43m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Saturn, from 08:41 to 09:32: 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.