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 Wednesday, 9 December 2026: day of Mercury
- Sunrise
- 08:44
- Sunset
- 17:13
- Next sunrise
- 08:45
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury08:44 – 09:27
- 2☽︎ Moon09:27 – 10:09
- 3♄︎ Saturn10:09 – 10:51
- 4♃︎ Jupiter10:51 – 11:34
- 5♂︎ Mars11:34 – 12:16
- 6☉︎ Sun12:16 – 12:58
- 7♀︎ Venus12:58 – 13:41
- 8☿︎ Mercury13:41 – 14:23
- 9☽︎ Moon14:23 – 15:05
- 10♄︎ Saturn15:05 – 15:48
- 11♃︎ Jupiter15:48 – 16:30
- 12♂︎ Mars16:30 – 17:13
Night
- 1☉︎ Sun17:13 – 18:30
- 2♀︎ Venus18:30 – 19:48
- 3☿︎ Mercury19:48 – 21:06
- 4☽︎ Moon21:06 – 22:23
- 5♄︎ Saturn22:23 – 23:41
- 6♃︎ Jupiter23:41 – 00:59
- 7♂︎ Mars00:59 – 02:17
- 8☉︎ Sun02:17 – 03:34
- 9♀︎ Venus03:34 – 04:52
- 10☿︎ Mercury04:52 – 06:10
- 11☽︎ Moon06:10 – 07:28
- 12♄︎ Saturn07:28 – 08:45
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Wednesday, 9 December 2026, the Sun rises at 08:44 and sets at 17:13: the day lasts 8h 28m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:45, lasts 15h 33m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Mercury, from 08:44 to 09:27: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.