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 Wednesday, 23 September 2026: day of Mercury
- Sunrise
- 07:54
- Sunset
- 20:02
- Next sunrise
- 07:55
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:54 – 08:54
- 2☽︎ Moon08:54 – 09:55
- 3♄︎ Saturn09:55 – 10:56
- 4♃︎ Jupiter10:56 – 11:56
- 5♂︎ Mars11:56 – 12:57
- 6☉︎ Sun12:57 – 13:58
- 7♀︎ Venus13:58 – 14:58
- 8☿︎ Mercury14:58 – 15:59
- 9☽︎ Moon15:59 – 17:00
- 10♄︎ Saturn17:00 – 18:00
- 11♃︎ Jupiter18:00 – 19:01
- 12♂︎ Mars19:01 – 20:02
Night
- 1☉︎ Sun20:02 – 21:01
- 2♀︎ Venus21:01 – 22:01
- 3☿︎ Mercury22:01 – 23:00
- 4☽︎ Moon23:00 – 23:59
- 5♄︎ Saturn23:59 – 00:59
- 6♃︎ Jupiter00:59 – 01:58
- 7♂︎ Mars01:58 – 02:58
- 8☉︎ Sun02:58 – 03:57
- 9♀︎ Venus03:57 – 04:57
- 10☿︎ Mercury04:57 – 05:56
- 11☽︎ Moon05:56 – 06:56
- 12♄︎ Saturn06:56 – 07:55
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Wednesday, 23 September 2026, the Sun rises at 07:54 and sets at 20:02: the day lasts 12h 08m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:55, lasts 11h 53m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Mercury, from 07:54 to 08:54: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.