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, 16 September 2026: day of Mercury
- Sunrise
- 07:44
- Sunset
- 20:16
- Next sunrise
- 07:46
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:44 – 08:47
- 2☽︎ Moon08:47 – 09:50
- 3♄︎ Saturn09:50 – 10:52
- 4♃︎ Jupiter10:52 – 11:55
- 5♂︎ Mars11:55 – 12:57
- 6☉︎ Sun12:57 – 14:00
- 7♀︎ Venus14:00 – 15:03
- 8☿︎ Mercury15:03 – 16:05
- 9☽︎ Moon16:05 – 17:08
- 10♄︎ Saturn17:08 – 18:11
- 11♃︎ Jupiter18:11 – 19:13
- 12♂︎ Mars19:13 – 20:16
Night
- 1☉︎ Sun20:16 – 21:13
- 2♀︎ Venus21:13 – 22:11
- 3☿︎ Mercury22:11 – 23:08
- 4☽︎ Moon23:08 – 00:06
- 5♄︎ Saturn00:06 – 01:03
- 6♃︎ Jupiter01:03 – 02:01
- 7♂︎ Mars02:01 – 02:58
- 8☉︎ Sun02:58 – 03:56
- 9♀︎ Venus03:56 – 04:53
- 10☿︎ Mercury04:53 – 05:51
- 11☽︎ Moon05:51 – 06:48
- 12♄︎ Saturn06:48 – 07:46
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Wednesday, 16 September 2026, the Sun rises at 07:44 and sets at 20:16: the day lasts 12h 32m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 07:46, lasts 11h 30m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mercury, from 07:44 to 08:47: 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.