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 Friday, 17 October 2025: day of Venus
- Sunrise
- 08:29
- Sunset
- 19:13
- Next sunrise
- 08:30
A day hour lasts 54 min; a night hour, 1h 06m. Local time (Europe/Paris).
Day
- 1♀︎ Venus08:29 – 09:22
- 2☿︎ Mercury09:22 – 10:16
- 3☽︎ Moon10:16 – 11:10
- 4♄︎ Saturn11:10 – 12:04
- 5♃︎ Jupiter12:04 – 12:57
- 6♂︎ Mars12:57 – 13:51
- 7☉︎ Sun13:51 – 14:45
- 8♀︎ Venus14:45 – 15:39
- 9☿︎ Mercury15:39 – 16:32
- 10☽︎ Moon16:32 – 17:26
- 11♄︎ Saturn17:26 – 18:20
- 12♃︎ Jupiter18:20 – 19:13
Night
- 1♂︎ Mars19:13 – 20:20
- 2☉︎ Sun20:20 – 21:26
- 3♀︎ Venus21:26 – 22:33
- 4☿︎ Mercury22:33 – 23:39
- 5☽︎ Moon23:39 – 00:45
- 6♄︎ Saturn00:45 – 01:52
- 7♃︎ Jupiter01:52 – 02:58
- 8♂︎ Mars02:58 – 04:05
- 9☉︎ Sun04:05 – 05:11
- 10♀︎ Venus05:11 – 06:17
- 11☿︎ Mercury06:17 – 07:24
- 12☽︎ Moon07:24 – 08:30
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Friday, 17 October 2025, the Sun rises at 08:29 and sets at 19:13: the day lasts 10h 45m, that is twelve day hours of 54 min. The night, until the next sunrise at 08:30, lasts 13h 17m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Venus, from 08:29 to 09:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.