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, 22 December 2026: day of Mars
- Sunrise
- 08:50
- Sunset
- 17:19
- Next sunrise
- 08:50
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:50 – 09:32
- 2☉︎ Sun09:32 – 10:15
- 3♀︎ Venus10:15 – 10:57
- 4☿︎ Mercury10:57 – 11:39
- 5☽︎ Moon11:39 – 12:22
- 6♄︎ Saturn12:22 – 13:04
- 7♃︎ Jupiter13:04 – 13:47
- 8♂︎ Mars13:47 – 14:29
- 9☉︎ Sun14:29 – 15:11
- 10♀︎ Venus15:11 – 15:54
- 11☿︎ Mercury15:54 – 16:36
- 12☽︎ Moon16:36 – 17:19
Night
- 1♄︎ Saturn17:19 – 18:36
- 2♃︎ Jupiter18:36 – 19:54
- 3♂︎ Mars19:54 – 21:12
- 4☉︎ Sun21:12 – 22:29
- 5♀︎ Venus22:29 – 23:47
- 6☿︎ Mercury23:47 – 01:04
- 7☽︎ Moon01:04 – 02:22
- 8♄︎ Saturn02:22 – 03:40
- 9♃︎ Jupiter03:40 – 04:57
- 10♂︎ Mars04:57 – 06:15
- 11☉︎ Sun06:15 – 07:33
- 12♀︎ Venus07:33 – 08:50
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 22 December 2026, the Sun rises at 08:50 and sets at 17:19: 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?
Mars, from 08:50 to 09:32: 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.