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, 4 January 2026: day of the Sun
- Sunrise
- 08:56
- Sunset
- 17:26
- Next sunrise
- 08:56
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/Paris).
Day
- 1☉︎ Sun08:56 – 09:39
- 2♀︎ Venus09:39 – 10:21
- 3☿︎ Mercury10:21 – 11:04
- 4☽︎ Moon11:04 – 11:46
- 5♄︎ Saturn11:46 – 12:29
- 6♃︎ Jupiter12:29 – 13:11
- 7♂︎ Mars13:11 – 13:54
- 8☉︎ Sun13:54 – 14:36
- 9♀︎ Venus14:36 – 15:19
- 10☿︎ Mercury15:19 – 16:01
- 11☽︎ Moon16:01 – 16:44
- 12♄︎ Saturn16:44 – 17:26
Night
- 1♃︎ Jupiter17:26 – 18:44
- 2♂︎ Mars18:44 – 20:01
- 3☉︎ Sun20:01 – 21:19
- 4♀︎ Venus21:19 – 22:36
- 5☿︎ Mercury22:36 – 23:54
- 6☽︎ Moon23:54 – 01:11
- 7♄︎ Saturn01:11 – 02:29
- 8♃︎ Jupiter02:29 – 03:46
- 9♂︎ Mars03:46 – 05:04
- 10☉︎ Sun05:04 – 06:21
- 11♀︎ Venus06:21 – 07:39
- 12☿︎ Mercury07:39 – 08:56
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Sunday, 4 January 2026, the Sun rises at 08:56 and sets at 17:26: the day lasts 8h 30m, that is twelve day hours of 43 min. The night, until the next sunrise at 08:56, lasts 15h 30m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
The Sun, from 08:56 to 09:39: 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.