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 Monday, 21 December 2026: day of the Moon
- Sunrise
- 08:54
- Sunset
- 17:15
- Next sunrise
- 08:54
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☽︎ Moon08:54 – 09:35
- 2♄︎ Saturn09:35 – 10:17
- 3♃︎ Jupiter10:17 – 10:59
- 4♂︎ Mars10:59 – 11:41
- 5☉︎ Sun11:41 – 12:22
- 6♀︎ Venus12:22 – 13:04
- 7☿︎ Mercury13:04 – 13:46
- 8☽︎ Moon13:46 – 14:28
- 9♄︎ Saturn14:28 – 15:10
- 10♃︎ Jupiter15:10 – 15:51
- 11♂︎ Mars15:51 – 16:33
- 12☉︎ Sun16:33 – 17:15
Night
- 1♀︎ Venus17:15 – 18:33
- 2☿︎ Mercury18:33 – 19:51
- 3☽︎ Moon19:51 – 21:10
- 4♄︎ Saturn21:10 – 22:28
- 5♃︎ Jupiter22:28 – 23:46
- 6♂︎ Mars23:46 – 01:04
- 7☉︎ Sun01:04 – 02:23
- 8♀︎ Venus02:23 – 03:41
- 9☿︎ Mercury03:41 – 04:59
- 10☽︎ Moon04:59 – 06:18
- 11♄︎ Saturn06:18 – 07:36
- 12♃︎ Jupiter07:36 – 08:54
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Monday, 21 December 2026, the Sun rises at 08:54 and sets at 17:15: the day lasts 8h 21m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:54, lasts 15h 39m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Moon, from 08:54 to 09:35: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.