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, 29 December 2026: day of Mars
- Sunrise
- 08:52
- Sunset
- 17:23
- 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 – 10:17
- 3♀︎ Venus10:17 – 11:00
- 4☿︎ Mercury11:00 – 11:43
- 5☽︎ Moon11:43 – 12:25
- 6♄︎ Saturn12:25 – 13:08
- 7♃︎ Jupiter13:08 – 13:50
- 8♂︎ Mars13:50 – 14:33
- 9☉︎ Sun14:33 – 15:16
- 10♀︎ Venus15:16 – 15:58
- 11☿︎ Mercury15:58 – 16:41
- 12☽︎ Moon16:41 – 17:23
Night
- 1♄︎ Saturn17:23 – 18:41
- 2♃︎ Jupiter18:41 – 19:58
- 3♂︎ Mars19:58 – 21:16
- 4☉︎ Sun21:16 – 22:33
- 5♀︎ Venus22:33 – 23:50
- 6☿︎ Mercury23:50 – 01:08
- 7☽︎ Moon01:08 – 02:25
- 8♄︎ Saturn02:25 – 03:43
- 9♃︎ Jupiter03:43 – 05:00
- 10♂︎ Mars05:00 – 06:17
- 11☉︎ Sun06:17 – 07:35
- 12♀︎ Venus07:35 – 08:52
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 29 December 2026, the Sun rises at 08:52 and sets at 17:23: the day lasts 8h 31m, that is twelve day hours of 43 min. The night, until the next sunrise at 08:52, lasts 15h 29m: 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.