AstroXP ▶︎All our videos by signVideos
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 Friday, 18 December 2026: day of Venus

Sunrise
08:48
Sunset
17:17
Next sunrise
08:48

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

Day

  1. 1♀︎ Venus08:48 – 09:30
  2. 2☿︎ Mercury09:30 – 10:13
  3. 3☽︎ Moon10:13 – 10:55
  4. 4♄︎ Saturn10:55 – 11:37
  5. 5♃︎ Jupiter11:37 – 12:20
  6. 6♂︎ Mars12:20 – 13:02
  7. 7☉︎ Sun13:02 – 13:45
  8. 8♀︎ Venus13:45 – 14:27
  9. 9☿︎ Mercury14:27 – 15:10
  10. 10☽︎ Moon15:10 – 15:52
  11. 11♄︎ Saturn15:52 – 16:34
  12. 12♃︎ Jupiter16:34 – 17:17

Night

  1. 1♂︎ Mars17:17 – 18:34
  2. 2☉︎ Sun18:34 – 19:52
  3. 3♀︎ Venus19:52 – 21:10
  4. 4☿︎ Mercury21:10 – 22:27
  5. 5☽︎ Moon22:27 – 23:45
  6. 6♄︎ Saturn23:45 – 01:03
  7. 7♃︎ Jupiter01:03 – 02:20
  8. 8♂︎ Mars02:20 – 03:38
  9. 9☉︎ Sun03:38 – 04:55
  10. 10♀︎ Venus04:55 – 06:13
  11. 11☿︎ Mercury06:13 – 07:31
  12. 12☽︎ Moon07:31 – 08:48

Questions

How are the planetary hours calculated in Nantes?

On Friday, 18 December 2026, the Sun rises at 08:48 and sets at 17:17: the day lasts 8h 29m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:48, lasts 15h 31m: twelve night hours of 1h 18m.

Which planet rules the first hour that day?

Venus, from 08:48 to 09:30: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.

My sky on my chart

On a computer? Scan this code with your phone.

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.