Planetary hours
in Nantes.
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 Saturday, 25 October 2025: day of Saturn
- Sunrise
- 08:39
- Sunset
- 19:00
- Next sunrise
- 07:40
A day hour lasts 52 min; a night hour, 1h 08m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:39 – 09:30
- 2♃︎ Jupiter09:30 – 10:22
- 3♂︎ Mars10:22 – 11:14
- 4☉︎ Sun11:14 – 12:06
- 5♀︎ Venus12:06 – 12:58
- 6☿︎ Mercury12:58 – 13:49
- 7☽︎ Moon13:49 – 14:41
- 8♄︎ Saturn14:41 – 15:33
- 9♃︎ Jupiter15:33 – 16:25
- 10♂︎ Mars16:25 – 17:17
- 11☉︎ Sun17:17 – 18:08
- 12♀︎ Venus18:08 – 19:00
Night
- 1☿︎ Mercury19:00 – 20:08
- 2☽︎ Moon20:08 – 21:17
- 3♄︎ Saturn21:17 – 22:25
- 4♃︎ Jupiter22:25 – 23:33
- 5♂︎ Mars23:33 – 00:42
- 6☉︎ Sun00:42 – 01:50
- 7♀︎ Venus01:50 – 02:58
- 8☿︎ Mercury02:58 – 03:07
- 9☽︎ Moon03:07 – 04:15
- 10♄︎ Saturn04:15 – 05:23
- 11♃︎ Jupiter05:23 – 06:32
- 12♂︎ Mars06:32 – 07:40
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Saturday, 25 October 2025, the Sun rises at 08:39 and sets at 19:00: the day lasts 10h 21m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:40, lasts 13h 40m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Saturn, from 08:39 to 09:30: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.