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 Wednesday, 30 July 2025: day of Mercury
- Sunrise
- 06:40
- Sunset
- 21:45
- Next sunrise
- 06:41
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury06:40 – 07:55
- 2☽︎ Moon07:55 – 09:10
- 3♄︎ Saturn09:10 – 10:26
- 4♃︎ Jupiter10:26 – 11:41
- 5♂︎ Mars11:41 – 12:57
- 6☉︎ Sun12:57 – 14:12
- 7♀︎ Venus14:12 – 15:28
- 8☿︎ Mercury15:28 – 16:43
- 9☽︎ Moon16:43 – 17:59
- 10♄︎ Saturn17:59 – 19:14
- 11♃︎ Jupiter19:14 – 20:29
- 12♂︎ Mars20:29 – 21:45
Night
- 1☉︎ Sun21:45 – 22:29
- 2♀︎ Venus22:29 – 23:14
- 3☿︎ Mercury23:14 – 23:59
- 4☽︎ Moon23:59 – 00:44
- 5♄︎ Saturn00:44 – 01:28
- 6♃︎ Jupiter01:28 – 02:13
- 7♂︎ Mars02:13 – 02:58
- 8☉︎ Sun02:58 – 03:42
- 9♀︎ Venus03:42 – 04:27
- 10☿︎ Mercury04:27 – 05:12
- 11☽︎ Moon05:12 – 05:56
- 12♄︎ Saturn05:56 – 06:41
Other cities · France
Questions
How are the planetary hours calculated in Rennes?
On Wednesday, 30 July 2025, the Sun rises at 06:40 and sets at 21:45: the day lasts 15h 05m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:41, lasts 8h 56m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Mercury, from 06:40 to 07:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.