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 Friday, 26 September 2025: day of Venus
- Sunrise
- 07:58
- Sunset
- 19:55
- Next sunrise
- 07:59
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Europe/Paris).
Day
- 1♀︎ Venus07:58 – 08:58
- 2☿︎ Mercury08:58 – 09:57
- 3☽︎ Moon09:57 – 10:57
- 4♄︎ Saturn10:57 – 11:57
- 5♃︎ Jupiter11:57 – 12:57
- 6♂︎ Mars12:57 – 13:57
- 7☉︎ Sun13:57 – 14:56
- 8♀︎ Venus14:56 – 15:56
- 9☿︎ Mercury15:56 – 16:56
- 10☽︎ Moon16:56 – 17:56
- 11♄︎ Saturn17:56 – 18:55
- 12♃︎ Jupiter18:55 – 19:55
Night
- 1♂︎ Mars19:55 – 20:55
- 2☉︎ Sun20:55 – 21:56
- 3♀︎ Venus21:56 – 22:56
- 4☿︎ Mercury22:56 – 23:56
- 5☽︎ Moon23:56 – 00:57
- 6♄︎ Saturn00:57 – 01:57
- 7♃︎ Jupiter01:57 – 02:58
- 8♂︎ Mars02:58 – 03:58
- 9☉︎ Sun03:58 – 04:58
- 10♀︎ Venus04:58 – 05:59
- 11☿︎ Mercury05:59 – 06:59
- 12☽︎ Moon06:59 – 07:59
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Friday, 26 September 2025, the Sun rises at 07:58 and sets at 19:55: the day lasts 11h 57m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 07:59, lasts 12h 04m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Venus, from 07:58 to 08:58: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.