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, 12 September 2026: day of Saturn
- Sunrise
- 07:39
- Sunset
- 20:24
- Next sunrise
- 07:40
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:39 – 08:43
- 2♃︎ Jupiter08:43 – 09:47
- 3♂︎ Mars09:47 – 10:50
- 4☉︎ Sun10:50 – 11:54
- 5♀︎ Venus11:54 – 12:58
- 6☿︎ Mercury12:58 – 14:02
- 7☽︎ Moon14:02 – 15:05
- 8♄︎ Saturn15:05 – 16:09
- 9♃︎ Jupiter16:09 – 17:13
- 10♂︎ Mars17:13 – 18:16
- 11☉︎ Sun18:16 – 19:20
- 12♀︎ Venus19:20 – 20:24
Night
- 1☿︎ Mercury20:24 – 21:20
- 2☽︎ Moon21:20 – 22:17
- 3♄︎ Saturn22:17 – 23:13
- 4♃︎ Jupiter23:13 – 00:09
- 5♂︎ Mars00:09 – 01:06
- 6☉︎ Sun01:06 – 02:02
- 7♀︎ Venus02:02 – 02:59
- 8☿︎ Mercury02:59 – 03:55
- 9☽︎ Moon03:55 – 04:51
- 10♄︎ Saturn04:51 – 05:48
- 11♃︎ Jupiter05:48 – 06:44
- 12♂︎ Mars06:44 – 07:40
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Saturday, 12 September 2026, the Sun rises at 07:39 and sets at 20:24: the day lasts 12h 45m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 07:40, lasts 11h 16m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Saturn, from 07:39 to 08:43: 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.