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 Thursday, 9 October 2025: day of Jupiter
- Sunrise
- 08:17
- Sunset
- 19:29
- Next sunrise
- 08:18
A day hour lasts 56 min; a night hour, 1h 04m. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter08:17 – 09:13
- 2♂︎ Mars09:13 – 10:09
- 3☉︎ Sun10:09 – 11:05
- 4♀︎ Venus11:05 – 12:01
- 5☿︎ Mercury12:01 – 12:57
- 6☽︎ Moon12:57 – 13:53
- 7♄︎ Saturn13:53 – 14:49
- 8♃︎ Jupiter14:49 – 15:45
- 9♂︎ Mars15:45 – 16:41
- 10☉︎ Sun16:41 – 17:37
- 11♀︎ Venus17:37 – 18:33
- 12☿︎ Mercury18:33 – 19:29
Night
- 1☽︎ Moon19:29 – 20:33
- 2♄︎ Saturn20:33 – 21:37
- 3♃︎ Jupiter21:37 – 22:41
- 4♂︎ Mars22:41 – 23:45
- 5☉︎ Sun23:45 – 00:50
- 6♀︎ Venus00:50 – 01:54
- 7☿︎ Mercury01:54 – 02:58
- 8☽︎ Moon02:58 – 04:02
- 9♄︎ Saturn04:02 – 05:06
- 10♃︎ Jupiter05:06 – 06:10
- 11♂︎ Mars06:10 – 07:14
- 12☉︎ Sun07:14 – 08:18
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Thursday, 9 October 2025, the Sun rises at 08:17 and sets at 19:29: the day lasts 11h 12m, that is twelve day hours of 56 min. The night, until the next sunrise at 08:18, lasts 12h 50m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Jupiter, from 08:17 to 09:13: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.