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, 31 January 2026: day of Saturn
- Sunrise
- 08:33
- Sunset
- 18:06
- Next sunrise
- 08:31
A day hour lasts 48 min; a night hour, 1h 12m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:33 – 09:20
- 2♃︎ Jupiter09:20 – 10:08
- 3♂︎ Mars10:08 – 10:56
- 4☉︎ Sun10:56 – 11:44
- 5♀︎ Venus11:44 – 12:32
- 6☿︎ Mercury12:32 – 13:19
- 7☽︎ Moon13:19 – 14:07
- 8♄︎ Saturn14:07 – 14:55
- 9♃︎ Jupiter14:55 – 15:43
- 10♂︎ Mars15:43 – 16:31
- 11☉︎ Sun16:31 – 17:18
- 12♀︎ Venus17:18 – 18:06
Night
- 1☿︎ Mercury18:06 – 19:18
- 2☽︎ Moon19:18 – 20:30
- 3♄︎ Saturn20:30 – 21:42
- 4♃︎ Jupiter21:42 – 22:55
- 5♂︎ Mars22:55 – 00:07
- 6☉︎ Sun00:07 – 01:19
- 7♀︎ Venus01:19 – 02:31
- 8☿︎ Mercury02:31 – 03:43
- 9☽︎ Moon03:43 – 04:55
- 10♄︎ Saturn04:55 – 06:07
- 11♃︎ Jupiter06:07 – 07:19
- 12♂︎ Mars07:19 – 08:31
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Saturday, 31 January 2026, the Sun rises at 08:33 and sets at 18:06: the day lasts 9h 34m, that is twelve day hours of 48 min. The night, until the next sunrise at 08:31, lasts 14h 25m: twelve night hours of 1h 12m.
Which planet rules the first hour that day?
Saturn, from 08:33 to 09:20: 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.