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 Sunday, 17 August 2025: day of the Sun
- Sunrise
- 07:05
- Sunset
- 21:13
- Next sunrise
- 07:07
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Europe/Paris).
Day
- 1☉︎ Sun07:05 – 08:16
- 2♀︎ Venus08:16 – 09:27
- 3☿︎ Mercury09:27 – 10:37
- 4☽︎ Moon10:37 – 11:48
- 5♄︎ Saturn11:48 – 12:59
- 6♃︎ Jupiter12:59 – 14:09
- 7♂︎ Mars14:09 – 15:20
- 8☉︎ Sun15:20 – 16:31
- 9♀︎ Venus16:31 – 17:41
- 10☿︎ Mercury17:41 – 18:52
- 11☽︎ Moon18:52 – 20:03
- 12♄︎ Saturn20:03 – 21:13
Night
- 1♃︎ Jupiter21:13 – 22:03
- 2♂︎ Mars22:03 – 22:52
- 3☉︎ Sun22:52 – 23:42
- 4♀︎ Venus23:42 – 00:31
- 5☿︎ Mercury00:31 – 01:20
- 6☽︎ Moon01:20 – 02:10
- 7♄︎ Saturn02:10 – 02:59
- 8♃︎ Jupiter02:59 – 03:49
- 9♂︎ Mars03:49 – 04:38
- 10☉︎ Sun04:38 – 05:28
- 11♀︎ Venus05:28 – 06:17
- 12☿︎ Mercury06:17 – 07:07
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Sunday, 17 August 2025, the Sun rises at 07:05 and sets at 21:13: the day lasts 14h 08m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 07:07, lasts 9h 53m: twelve night hours of 49 min.
Which planet rules the first hour that day?
The Sun, from 07:05 to 08:16: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.