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, 18 July 2026: day of Saturn
- Sunrise
- 06:28
- Sunset
- 21:55
- Next sunrise
- 06:29
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn06:28 – 07:45
- 2♃︎ Jupiter07:45 – 09:03
- 3♂︎ Mars09:03 – 10:20
- 4☉︎ Sun10:20 – 11:37
- 5♀︎ Venus11:37 – 12:54
- 6☿︎ Mercury12:54 – 14:12
- 7☽︎ Moon14:12 – 15:29
- 8♄︎ Saturn15:29 – 16:46
- 9♃︎ Jupiter16:46 – 18:03
- 10♂︎ Mars18:03 – 19:21
- 11☉︎ Sun19:21 – 20:38
- 12♀︎ Venus20:38 – 21:55
Night
- 1☿︎ Mercury21:55 – 22:38
- 2☽︎ Moon22:38 – 23:21
- 3♄︎ Saturn23:21 – 00:04
- 4♃︎ Jupiter00:04 – 00:47
- 5♂︎ Mars00:47 – 01:29
- 6☉︎ Sun01:29 – 02:12
- 7♀︎ Venus02:12 – 02:55
- 8☿︎ Mercury02:55 – 03:38
- 9☽︎ Moon03:38 – 04:21
- 10♄︎ Saturn04:21 – 05:03
- 11♃︎ Jupiter05:03 – 05:46
- 12♂︎ Mars05:46 – 06:29
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Saturday, 18 July 2026, the Sun rises at 06:28 and sets at 21:55: the day lasts 15h 27m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 06:29, lasts 8h 34m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Saturn, from 06:28 to 07:45: 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.