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, 30 December 2025: day of Mars
- Sunrise
- 08:52
- Sunset
- 17:25
- Next sunrise
- 08:52
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:52 – 09:35
- 2☉︎ Sun09:35 – 10:18
- 3♀︎ Venus10:18 – 11:00
- 4☿︎ Mercury11:00 – 11:43
- 5☽︎ Moon11:43 – 12:26
- 6♄︎ Saturn12:26 – 13:08
- 7♃︎ Jupiter13:08 – 13:51
- 8♂︎ Mars13:51 – 14:34
- 9☉︎ Sun14:34 – 15:16
- 10♀︎ Venus15:16 – 15:59
- 11☿︎ Mercury15:59 – 16:42
- 12☽︎ Moon16:42 – 17:25
Night
- 1♄︎ Saturn17:25 – 18:42
- 2♃︎ Jupiter18:42 – 19:59
- 3♂︎ Mars19:59 – 21:16
- 4☉︎ Sun21:16 – 22:34
- 5♀︎ Venus22:34 – 23:51
- 6☿︎ Mercury23:51 – 01:08
- 7☽︎ Moon01:08 – 02:26
- 8♄︎ Saturn02:26 – 03:43
- 9♃︎ Jupiter03:43 – 05:00
- 10♂︎ Mars05:00 – 06:18
- 11☉︎ Sun06:18 – 07:35
- 12♀︎ Venus07:35 – 08:52
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 30 December 2025, the Sun rises at 08:52 and sets at 17:25: the day lasts 8h 32m, that is twelve day hours of 43 min. The night, until the next sunrise at 08:52, lasts 15h 28m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
Mars, 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: 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.