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 Sunday, 12 October 2025: day of the Sun
- Sunrise
- 08:21
- Sunset
- 19:23
- Next sunrise
- 08:23
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Europe/Paris).
Day
- 1☉︎ Sun08:21 – 09:17
- 2♀︎ Venus09:17 – 10:12
- 3☿︎ Mercury10:12 – 11:07
- 4☽︎ Moon11:07 – 12:02
- 5♄︎ Saturn12:02 – 12:57
- 6♃︎ Jupiter12:57 – 13:52
- 7♂︎ Mars13:52 – 14:47
- 8☉︎ Sun14:47 – 15:42
- 9♀︎ Venus15:42 – 16:38
- 10☿︎ Mercury16:38 – 17:33
- 11☽︎ Moon17:33 – 18:28
- 12♄︎ Saturn18:28 – 19:23
Night
- 1♃︎ Jupiter19:23 – 20:28
- 2♂︎ Mars20:28 – 21:33
- 3☉︎ Sun21:33 – 22:38
- 4♀︎ Venus22:38 – 23:43
- 5☿︎ Mercury23:43 – 00:48
- 6☽︎ Moon00:48 – 01:53
- 7♄︎ Saturn01:53 – 02:58
- 8♃︎ Jupiter02:58 – 04:03
- 9♂︎ Mars04:03 – 05:08
- 10☉︎ Sun05:08 – 06:13
- 11♀︎ Venus06:13 – 07:18
- 12☿︎ Mercury07:18 – 08:23
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Sunday, 12 October 2025, the Sun rises at 08:21 and sets at 19:23: the day lasts 11h 02m, that is twelve day hours of 55 min. The night, until the next sunrise at 08:23, lasts 13h 00m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
The Sun, from 08:21 to 09:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.