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, 13 August 2025: day of Mercury
- Sunrise
- 07:00
- Sunset
- 21:20
- Next sunrise
- 07:01
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:00 – 08:12
- 2☽︎ Moon08:12 – 09:23
- 3♄︎ Saturn09:23 – 10:35
- 4♃︎ Jupiter10:35 – 11:47
- 5♂︎ Mars11:47 – 12:58
- 6☉︎ Sun12:58 – 14:10
- 7♀︎ Venus14:10 – 15:22
- 8☿︎ Mercury15:22 – 16:33
- 9☽︎ Moon16:33 – 17:45
- 10♄︎ Saturn17:45 – 18:57
- 11♃︎ Jupiter18:57 – 20:09
- 12♂︎ Mars20:09 – 21:20
Night
- 1☉︎ Sun21:20 – 22:09
- 2♀︎ Venus22:09 – 22:57
- 3☿︎ Mercury22:57 – 23:45
- 4☽︎ Moon23:45 – 00:34
- 5♄︎ Saturn00:34 – 01:22
- 6♃︎ Jupiter01:22 – 02:11
- 7♂︎ Mars02:11 – 02:59
- 8☉︎ Sun02:59 – 03:48
- 9♀︎ Venus03:48 – 04:36
- 10☿︎ Mercury04:36 – 05:24
- 11☽︎ Moon05:24 – 06:13
- 12♄︎ Saturn06:13 – 07:01
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Wednesday, 13 August 2025, the Sun rises at 07:00 and sets at 21:20: the day lasts 14h 20m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 07:01, lasts 9h 41m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mercury, from 07:00 to 08:12: 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.