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, 22 July 2025: day of Mars
- Sunrise
- 06:30
- Sunset
- 21:55
- Next sunrise
- 06:31
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars06:30 – 07:47
- 2☉︎ Sun07:47 – 09:04
- 3♀︎ Venus09:04 – 10:21
- 4☿︎ Mercury10:21 – 11:38
- 5☽︎ Moon11:38 – 12:55
- 6♄︎ Saturn12:55 – 14:12
- 7♃︎ Jupiter14:12 – 15:29
- 8♂︎ Mars15:29 – 16:46
- 9☉︎ Sun16:46 – 18:04
- 10♀︎ Venus18:04 – 19:21
- 11☿︎ Mercury19:21 – 20:38
- 12☽︎ Moon20:38 – 21:55
Night
- 1♄︎ Saturn21:55 – 22:38
- 2♃︎ Jupiter22:38 – 23:21
- 3♂︎ Mars23:21 – 00:04
- 4☉︎ Sun00:04 – 00:47
- 5♀︎ Venus00:47 – 01:30
- 6☿︎ Mercury01:30 – 02:13
- 7☽︎ Moon02:13 – 02:56
- 8♄︎ Saturn02:56 – 03:39
- 9♃︎ Jupiter03:39 – 04:22
- 10♂︎ Mars04:22 – 05:05
- 11☉︎ Sun05:05 – 05:48
- 12♀︎ Venus05:48 – 06:31
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Tuesday, 22 July 2025, the Sun rises at 06:30 and sets at 21:55: the day lasts 15h 25m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 06:31, lasts 8h 36m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Mars, from 06:30 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.