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 Tuesday, 20 October 2026: day of Mars
- Sunrise
- 08:31
- Sunset
- 19:09
- Next sunrise
- 08:32
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:31 – 09:24
- 2☉︎ Sun09:24 – 10:17
- 3♀︎ Venus10:17 – 11:11
- 4☿︎ Mercury11:11 – 12:04
- 5☽︎ Moon12:04 – 12:57
- 6♄︎ Saturn12:57 – 13:50
- 7♃︎ Jupiter13:50 – 14:43
- 8♂︎ Mars14:43 – 15:36
- 9☉︎ Sun15:36 – 16:30
- 10♀︎ Venus16:30 – 17:23
- 11☿︎ Mercury17:23 – 18:16
- 12☽︎ Moon18:16 – 19:09
Night
- 1♄︎ Saturn19:09 – 20:16
- 2♃︎ Jupiter20:16 – 21:23
- 3♂︎ Mars21:23 – 22:30
- 4☉︎ Sun22:30 – 23:37
- 5♀︎ Venus23:37 – 00:44
- 6☿︎ Mercury00:44 – 01:51
- 7☽︎ Moon01:51 – 02:58
- 8♄︎ Saturn02:58 – 04:05
- 9♃︎ Jupiter04:05 – 05:12
- 10♂︎ Mars05:12 – 06:19
- 11☉︎ Sun06:19 – 07:26
- 12♀︎ Venus07:26 – 08:32
Other cities · France
Questions
How are the planetary hours calculated in Nantes?
On Tuesday, 20 October 2026, the Sun rises at 08:31 and sets at 19:09: the day lasts 10h 38m, that is twelve day hours of 53 min. The night, until the next sunrise at 08:32, lasts 13h 23m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Mars, from 08:31 to 09:24: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.