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 Tuesday, 12 May 2026: day of Mars
- Sunrise
- 06:31
- Sunset
- 21:35
- Next sunrise
- 06:30
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars06:31 – 07:47
- 2☉︎ Sun07:47 – 09:02
- 3♀︎ Venus09:02 – 10:17
- 4☿︎ Mercury10:17 – 11:32
- 5☽︎ Moon11:32 – 12:48
- 6♄︎ Saturn12:48 – 14:03
- 7♃︎ Jupiter14:03 – 15:18
- 8♂︎ Mars15:18 – 16:34
- 9☉︎ Sun16:34 – 17:49
- 10♀︎ Venus17:49 – 19:04
- 11☿︎ Mercury19:04 – 20:19
- 12☽︎ Moon20:19 – 21:35
Night
- 1♄︎ Saturn21:35 – 22:19
- 2♃︎ Jupiter22:19 – 23:04
- 3♂︎ Mars23:04 – 23:49
- 4☉︎ Sun23:49 – 00:33
- 5♀︎ Venus00:33 – 01:18
- 6☿︎ Mercury01:18 – 02:02
- 7☽︎ Moon02:02 – 02:47
- 8♄︎ Saturn02:47 – 03:31
- 9♃︎ Jupiter03:31 – 04:16
- 10♂︎ Mars04:16 – 05:01
- 11☉︎ Sun05:01 – 05:45
- 12♀︎ Venus05:45 – 06:30
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Tuesday, 12 May 2026, the Sun rises at 06:31 and sets at 21:35: the day lasts 15h 03m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:30, lasts 8h 55m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Mars, from 06:31 to 07:47: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.