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, 20 December 2026: day of the Sun
- Sunrise
- 08:53
- Sunset
- 17:14
- Next sunrise
- 08:54
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☉︎ Sun08:53 – 09:35
- 2♀︎ Venus09:35 – 10:17
- 3☿︎ Mercury10:17 – 10:58
- 4☽︎ Moon10:58 – 11:40
- 5♄︎ Saturn11:40 – 12:22
- 6♃︎ Jupiter12:22 – 13:04
- 7♂︎ Mars13:04 – 13:46
- 8☉︎ Sun13:46 – 14:27
- 9♀︎ Venus14:27 – 15:09
- 10☿︎ Mercury15:09 – 15:51
- 11☽︎ Moon15:51 – 16:33
- 12♄︎ Saturn16:33 – 17:14
Night
- 1♃︎ Jupiter17:14 – 18:33
- 2♂︎ Mars18:33 – 19:51
- 3☉︎ Sun19:51 – 21:09
- 4♀︎ Venus21:09 – 22:27
- 5☿︎ Mercury22:27 – 23:46
- 6☽︎ Moon23:46 – 01:04
- 7♄︎ Saturn01:04 – 02:22
- 8♃︎ Jupiter02:22 – 03:41
- 9♂︎ Mars03:41 – 04:59
- 10☉︎ Sun04:59 – 06:17
- 11♀︎ Venus06:17 – 07:35
- 12☿︎ Mercury07:35 – 08:54
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Sunday, 20 December 2026, the Sun rises at 08:53 and sets at 17:14: 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 Sun, from 08:53 to 09:35: 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.