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, 15 August 2026: day of Saturn
- Sunrise
- 07:02
- Sunset
- 21:17
- Next sunrise
- 07:04
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:02 – 08:14
- 2♃︎ Jupiter08:14 – 09:25
- 3♂︎ Mars09:25 – 10:36
- 4☉︎ Sun10:36 – 11:47
- 5♀︎ Venus11:47 – 12:58
- 6☿︎ Mercury12:58 – 14:10
- 7☽︎ Moon14:10 – 15:21
- 8♄︎ Saturn15:21 – 16:32
- 9♃︎ Jupiter16:32 – 17:43
- 10♂︎ Mars17:43 – 18:55
- 11☉︎ Sun18:55 – 20:06
- 12♀︎ Venus20:06 – 21:17
Night
- 1☿︎ Mercury21:17 – 22:06
- 2☽︎ Moon22:06 – 22:55
- 3♄︎ Saturn22:55 – 23:44
- 4♃︎ Jupiter23:44 – 00:33
- 5♂︎ Mars00:33 – 01:22
- 6☉︎ Sun01:22 – 02:10
- 7♀︎ Venus02:10 – 02:59
- 8☿︎ Mercury02:59 – 03:48
- 9☽︎ Moon03:48 – 04:37
- 10♄︎ Saturn04:37 – 05:26
- 11♃︎ Jupiter05:26 – 06:15
- 12♂︎ Mars06:15 – 07:04
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Saturday, 15 August 2026, the Sun rises at 07:02 and sets at 21:17: the day lasts 14h 15m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 07:04, lasts 9h 46m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Saturn, from 07:02 to 08:14: 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.