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, 21 December 2026: day of the Moon
- Sunrise
- 08:49
- Sunset
- 17:18
- Next sunrise
- 08:50
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1☽︎ Moon08:49 – 09:32
- 2♄︎ Saturn09:32 – 10:14
- 3♃︎ Jupiter10:14 – 10:57
- 4♂︎ Mars10:57 – 11:39
- 5☉︎ Sun11:39 – 12:21
- 6♀︎ Venus12:21 – 13:04
- 7☿︎ Mercury13:04 – 13:46
- 8☽︎ Moon13:46 – 14:29
- 9♄︎ Saturn14:29 – 15:11
- 10♃︎ Jupiter15:11 – 15:53
- 11♂︎ Mars15:53 – 16:36
- 12☉︎ Sun16:36 – 17:18
Night
- 1♀︎ Venus17:18 – 18:36
- 2☿︎ Mercury18:36 – 19:53
- 3☽︎ Moon19:53 – 21:11
- 4♄︎ Saturn21:11 – 22:29
- 5♃︎ Jupiter22:29 – 23:46
- 6♂︎ Mars23:46 – 01:04
- 7☉︎ Sun01:04 – 02:22
- 8♀︎ Venus02:22 – 03:39
- 9☿︎ Mercury03:39 – 04:57
- 10☽︎ Moon04:57 – 06:15
- 11♄︎ Saturn06:15 – 07:32
- 12♃︎ Jupiter07:32 – 08:50
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Monday, 21 December 2026, the Sun rises at 08:49 and sets at 17:18: the day lasts 8h 29m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:50, lasts 15h 32m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Moon, from 08:49 to 09:32: 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.