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 Tuesday, 12 May 2026: day of Mars
- Sunrise
- 06:34
- Sunset
- 21:31
- Next sunrise
- 06:32
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars06:34 – 07:48
- 2☉︎ Sun07:48 – 09:03
- 3♀︎ Venus09:03 – 10:18
- 4☿︎ Mercury10:18 – 11:33
- 5☽︎ Moon11:33 – 12:48
- 6♄︎ Saturn12:48 – 14:02
- 7♃︎ Jupiter14:02 – 15:17
- 8♂︎ Mars15:17 – 16:32
- 9☉︎ Sun16:32 – 17:47
- 10♀︎ Venus17:47 – 19:02
- 11☿︎ Mercury19:02 – 20:17
- 12☽︎ Moon20:17 – 21:31
Night
- 1♄︎ Saturn21:31 – 22:16
- 2♃︎ Jupiter22:16 – 23:01
- 3♂︎ Mars23:01 – 23:47
- 4☉︎ Sun23:47 – 00:32
- 5♀︎ Venus00:32 – 01:17
- 6☿︎ Mercury01:17 – 02:02
- 7☽︎ Moon02:02 – 02:47
- 8♄︎ Saturn02:47 – 03:32
- 9♃︎ Jupiter03:32 – 04:17
- 10♂︎ Mars04:17 – 05:02
- 11☉︎ Sun05:02 – 05:47
- 12♀︎ Venus05:47 – 06:32
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 12 May 2026, the Sun rises at 06:34 and sets at 21:31: the day lasts 14h 58m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:32, lasts 9h 01m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Mars, from 06:34 to 07:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.