AstroXP ▶︎All our videos by signVideos
Planetary hours · Grenoble (France)

Planetary hours
in Grenoble.

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, 15 December 2026: day of Mars

Sunrise
08:09
Sunset
16:55
Next sunrise
08:09

A day hour lasts 44 min; a night hour, 1h 16m. Local time (Europe/Paris).

Day

  1. 1♂︎ Mars08:09 – 08:52
  2. 2☉︎ Sun08:52 – 09:36
  3. 3♀︎ Venus09:36 – 10:20
  4. 4☿︎ Mercury10:20 – 11:04
  5. 5☽︎ Moon11:04 – 11:48
  6. 6♄︎ Saturn11:48 – 12:32
  7. 7♃︎ Jupiter12:32 – 13:16
  8. 8♂︎ Mars13:16 – 13:59
  9. 9☉︎ Sun13:59 – 14:43
  10. 10♀︎ Venus14:43 – 15:27
  11. 11☿︎ Mercury15:27 – 16:11
  12. 12☽︎ Moon16:11 – 16:55

Night

  1. 1♄︎ Saturn16:55 – 18:11
  2. 2♃︎ Jupiter18:11 – 19:27
  3. 3♂︎ Mars19:27 – 20:43
  4. 4☉︎ Sun20:43 – 22:00
  5. 5♀︎ Venus22:00 – 23:16
  6. 6☿︎ Mercury23:16 – 00:32
  7. 7☽︎ Moon00:32 – 01:48
  8. 8♄︎ Saturn01:48 – 03:04
  9. 9♃︎ Jupiter03:04 – 04:21
  10. 10♂︎ Mars04:21 – 05:37
  11. 11☉︎ Sun05:37 – 06:53
  12. 12♀︎ Venus06:53 – 08:09

Questions

How are the planetary hours calculated in Grenoble?

On Tuesday, 15 December 2026, the Sun rises at 08:09 and sets at 16:55: the day lasts 8h 46m, that is twelve day hours of 44 min. The night, until the next sunrise at 08:09, lasts 15h 14m: twelve night hours of 1h 16m.

Which planet rules the first hour that day?

Mars, from 08:09 to 08:52: 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.

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.