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, 13 January 2026: day of Mars
- Sunrise
- 08:49
- Sunset
- 17:40
- Next sunrise
- 08:48
A day hour lasts 44 min; a night hour, 1h 16m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:49 – 09:33
- 2☉︎ Sun09:33 – 10:18
- 3♀︎ Venus10:18 – 11:02
- 4☿︎ Mercury11:02 – 11:46
- 5☽︎ Moon11:46 – 12:30
- 6♄︎ Saturn12:30 – 13:15
- 7♃︎ Jupiter13:15 – 13:59
- 8♂︎ Mars13:59 – 14:43
- 9☉︎ Sun14:43 – 15:27
- 10♀︎ Venus15:27 – 16:12
- 11☿︎ Mercury16:12 – 16:56
- 12☽︎ Moon16:56 – 17:40
Night
- 1♄︎ Saturn17:40 – 18:56
- 2♃︎ Jupiter18:56 – 20:11
- 3♂︎ Mars20:11 – 21:27
- 4☉︎ Sun21:27 – 22:43
- 5♀︎ Venus22:43 – 23:59
- 6☿︎ Mercury23:59 – 01:14
- 7☽︎ Moon01:14 – 02:30
- 8♄︎ Saturn02:30 – 03:46
- 9♃︎ Jupiter03:46 – 05:01
- 10♂︎ Mars05:01 – 06:17
- 11☉︎ Sun06:17 – 07:33
- 12♀︎ Venus07:33 – 08:48
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 13 January 2026, the Sun rises at 08:49 and sets at 17:40: the day lasts 8h 51m, that is twelve day hours of 44 min. The night, until the next sunrise at 08:48, lasts 15h 08m: twelve night hours of 1h 16m.
Which planet rules the first hour that day?
Mars, from 08:49 to 09:33: 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.