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, 30 July 2025: day of Mercury
- Sunrise
- 06:42
- Sunset
- 21:41
- Next sunrise
- 06:43
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury06:42 – 07:57
- 2☽︎ Moon07:57 – 09:12
- 3♄︎ Saturn09:12 – 10:27
- 4♃︎ Jupiter10:27 – 11:42
- 5♂︎ Mars11:42 – 12:57
- 6☉︎ Sun12:57 – 14:12
- 7♀︎ Venus14:12 – 15:27
- 8☿︎ Mercury15:27 – 16:42
- 9☽︎ Moon16:42 – 17:57
- 10♄︎ Saturn17:57 – 19:12
- 11♃︎ Jupiter19:12 – 20:26
- 12♂︎ Mars20:26 – 21:41
Night
- 1☉︎ Sun21:41 – 22:27
- 2♀︎ Venus22:27 – 23:12
- 3☿︎ Mercury23:12 – 23:57
- 4☽︎ Moon23:57 – 00:42
- 5♄︎ Saturn00:42 – 01:27
- 6♃︎ Jupiter01:27 – 02:12
- 7♂︎ Mars02:12 – 02:58
- 8☉︎ Sun02:58 – 03:43
- 9♀︎ Venus03:43 – 04:28
- 10☿︎ Mercury04:28 – 05:13
- 11☽︎ Moon05:13 – 05:58
- 12♄︎ Saturn05:58 – 06:43
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Wednesday, 30 July 2025, the Sun rises at 06:42 and sets at 21:41: the day lasts 14h 59m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:43, lasts 9h 02m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Mercury, from 06:42 to 07:57: 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.