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Planetary hours · Nantes (France)

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, 23 December 2025: day of Mars

Sunrise
08:50
Sunset
17:19
Next sunrise
08:51

A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).

Day

  1. 1♂︎ Mars08:50 – 09:33
  2. 2☉︎ Sun09:33 – 10:15
  3. 3♀︎ Venus10:15 – 10:58
  4. 4☿︎ Mercury10:58 – 11:40
  5. 5☽︎ Moon11:40 – 12:22
  6. 6♄︎ Saturn12:22 – 13:05
  7. 7♃︎ Jupiter13:05 – 13:47
  8. 8♂︎ Mars13:47 – 14:30
  9. 9☉︎ Sun14:30 – 15:12
  10. 10♀︎ Venus15:12 – 15:55
  11. 11☿︎ Mercury15:55 – 16:37
  12. 12☽︎ Moon16:37 – 17:19

Night

  1. 1♄︎ Saturn17:19 – 18:37
  2. 2♃︎ Jupiter18:37 – 19:55
  3. 3♂︎ Mars19:55 – 21:12
  4. 4☉︎ Sun21:12 – 22:30
  5. 5♀︎ Venus22:30 – 23:47
  6. 6☿︎ Mercury23:47 – 01:05
  7. 7☽︎ Moon01:05 – 02:23
  8. 8♄︎ Saturn02:23 – 03:40
  9. 9♃︎ Jupiter03:40 – 04:58
  10. 10♂︎ Mars04:58 – 06:16
  11. 11☉︎ Sun06:16 – 07:33
  12. 12♀︎ Venus07:33 – 08:51

Other cities · France

Questions

How are the planetary hours calculated in Nantes?

On Tuesday, 23 December 2025, the Sun rises at 08:50 and sets at 17:19: the day lasts 8h 29m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:51, lasts 15h 31m: twelve night hours of 1h 18m.

Which planet rules the first hour that day?

Mars, from 08:50 to 09:33: 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.

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Calendars

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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.