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 Friday, 12 September 2025: day of Venus
- Sunrise
- 07:39
- Sunset
- 20:25
- Next sunrise
- 07:41
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Paris).
Day
- 1♀︎ Venus07:39 – 08:43
- 2☿︎ Mercury08:43 – 09:47
- 3☽︎ Moon09:47 – 10:51
- 4♄︎ Saturn10:51 – 11:54
- 5♃︎ Jupiter11:54 – 12:58
- 6♂︎ Mars12:58 – 14:02
- 7☉︎ Sun14:02 – 15:06
- 8♀︎ Venus15:06 – 16:09
- 9☿︎ Mercury16:09 – 17:13
- 10☽︎ Moon17:13 – 18:17
- 11♄︎ Saturn18:17 – 19:21
- 12♃︎ Jupiter19:21 – 20:25
Night
- 1♂︎ Mars20:25 – 21:21
- 2☉︎ Sun21:21 – 22:17
- 3♀︎ Venus22:17 – 23:14
- 4☿︎ Mercury23:14 – 00:10
- 5☽︎ Moon00:10 – 01:06
- 6♄︎ Saturn01:06 – 02:03
- 7♃︎ Jupiter02:03 – 02:59
- 8♂︎ Mars02:59 – 03:55
- 9☉︎ Sun03:55 – 04:52
- 10♀︎ Venus04:52 – 05:48
- 11☿︎ Mercury05:48 – 06:44
- 12☽︎ Moon06:44 – 07:41
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Friday, 12 September 2025, the Sun rises at 07:39 and sets at 20:25: the day lasts 12h 45m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 07:41, lasts 11h 16m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Venus, from 07:39 to 08:43: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.