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 Monday, 29 December 2025: day of the Moon
- Sunrise
- 08:52
- Sunset
- 17:24
- Next sunrise
- 08:52
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/Paris).
Day
- 1☽︎ Moon08:52 – 09:35
- 2♄︎ Saturn09:35 – 10:17
- 3♃︎ Jupiter10:17 – 11:00
- 4♂︎ Mars11:00 – 11:43
- 5☉︎ Sun11:43 – 12:25
- 6♀︎ Venus12:25 – 13:08
- 7☿︎ Mercury13:08 – 13:51
- 8☽︎ Moon13:51 – 14:33
- 9♄︎ Saturn14:33 – 15:16
- 10♃︎ Jupiter15:16 – 15:58
- 11♂︎ Mars15:58 – 16:41
- 12☉︎ Sun16:41 – 17:24
Night
- 1♀︎ Venus17:24 – 18:41
- 2☿︎ Mercury18:41 – 19:58
- 3☽︎ Moon19:58 – 21:16
- 4♄︎ Saturn21:16 – 22:33
- 5♃︎ Jupiter22:33 – 23:51
- 6♂︎ Mars23:51 – 01:08
- 7☉︎ Sun01:08 – 02:25
- 8♀︎ Venus02:25 – 03:43
- 9☿︎ Mercury03:43 – 05:00
- 10☽︎ Moon05:00 – 06:18
- 11♄︎ Saturn06:18 – 07:35
- 12♃︎ Jupiter07:35 – 08:52
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Monday, 29 December 2025, the Sun rises at 08:52 and sets at 17:24: the day lasts 8h 31m, that is twelve day hours of 43 min. The night, until the next sunrise at 08:52, lasts 15h 29m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
The Moon, from 08:52 to 09:35: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.