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 Saturday, 17 October 2026: day of Saturn
- Sunrise
- 08:27
- Sunset
- 19:15
- Next sunrise
- 08:28
A day hour lasts 54 min; a night hour, 1h 06m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:27 – 09:21
- 2♃︎ Jupiter09:21 – 10:15
- 3♂︎ Mars10:15 – 11:09
- 4☉︎ Sun11:09 – 12:03
- 5♀︎ Venus12:03 – 12:57
- 6☿︎ Mercury12:57 – 13:51
- 7☽︎ Moon13:51 – 14:45
- 8♄︎ Saturn14:45 – 15:39
- 9♃︎ Jupiter15:39 – 16:33
- 10♂︎ Mars16:33 – 17:27
- 11☉︎ Sun17:27 – 18:21
- 12♀︎ Venus18:21 – 19:15
Night
- 1☿︎ Mercury19:15 – 20:21
- 2☽︎ Moon20:21 – 21:27
- 3♄︎ Saturn21:27 – 22:33
- 4♃︎ Jupiter22:33 – 23:39
- 5♂︎ Mars23:39 – 00:45
- 6☉︎ Sun00:45 – 01:51
- 7♀︎ Venus01:51 – 02:58
- 8☿︎ Mercury02:58 – 04:04
- 9☽︎ Moon04:04 – 05:10
- 10♄︎ Saturn05:10 – 06:16
- 11♃︎ Jupiter06:16 – 07:22
- 12♂︎ Mars07:22 – 08:28
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Saturday, 17 October 2026, the Sun rises at 08:27 and sets at 19:15: the day lasts 10h 48m, that is twelve day hours of 54 min. The night, until the next sunrise at 08:28, lasts 13h 13m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Saturn, from 08:27 to 09:21: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.