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 Thursday, 20 August 2026: day of Jupiter
- Sunrise
- 07:09
- Sunset
- 21:08
- Next sunrise
- 07:10
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter07:09 – 08:19
- 2♂︎ Mars08:19 – 09:29
- 3☉︎ Sun09:29 – 10:39
- 4♀︎ Venus10:39 – 11:49
- 5☿︎ Mercury11:49 – 12:59
- 6☽︎ Moon12:59 – 14:09
- 7♄︎ Saturn14:09 – 15:19
- 8♃︎ Jupiter15:19 – 16:29
- 9♂︎ Mars16:29 – 17:39
- 10☉︎ Sun17:39 – 18:49
- 11♀︎ Venus18:49 – 19:58
- 12☿︎ Mercury19:58 – 21:08
Night
- 1☽︎ Moon21:08 – 21:59
- 2♄︎ Saturn21:59 – 22:49
- 3♃︎ Jupiter22:49 – 23:39
- 4♂︎ Mars23:39 – 00:29
- 5☉︎ Sun00:29 – 01:19
- 6♀︎ Venus01:19 – 02:09
- 7☿︎ Mercury02:09 – 02:59
- 8☽︎ Moon02:59 – 03:50
- 9♄︎ Saturn03:50 – 04:40
- 10♃︎ Jupiter04:40 – 05:30
- 11♂︎ Mars05:30 – 06:20
- 12☉︎ Sun06:20 – 07:10
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Thursday, 20 August 2026, the Sun rises at 07:09 and sets at 21:08: the day lasts 14h 00m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 07:10, lasts 10h 02m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Jupiter, from 07:09 to 08:19: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.