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 Saturday, 22 August 2026: day of Saturn
- Sunrise
- 06:46
- Sunset
- 20:32
- Next sunrise
- 06:47
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn06:46 – 07:55
- 2♃︎ Jupiter07:55 – 09:04
- 3♂︎ Mars09:04 – 10:13
- 4☉︎ Sun10:13 – 11:22
- 5♀︎ Venus11:22 – 12:30
- 6☿︎ Mercury12:30 – 13:39
- 7☽︎ Moon13:39 – 14:48
- 8♄︎ Saturn14:48 – 15:57
- 9♃︎ Jupiter15:57 – 17:06
- 10♂︎ Mars17:06 – 18:14
- 11☉︎ Sun18:14 – 19:23
- 12♀︎ Venus19:23 – 20:32
Night
- 1☿︎ Mercury20:32 – 21:23
- 2☽︎ Moon21:23 – 22:15
- 3♄︎ Saturn22:15 – 23:06
- 4♃︎ Jupiter23:06 – 23:57
- 5♂︎ Mars23:57 – 00:48
- 6☉︎ Sun00:48 – 01:40
- 7♀︎ Venus01:40 – 02:31
- 8☿︎ Mercury02:31 – 03:22
- 9☽︎ Moon03:22 – 04:14
- 10♄︎ Saturn04:14 – 05:05
- 11♃︎ Jupiter05:05 – 05:56
- 12♂︎ Mars05:56 – 06:47
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 22 August 2026, the Sun rises at 06:46 and sets at 20:32: the day lasts 13h 46m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:47, lasts 10h 15m: twelve night hours of 51 min.
Which planet rules the first hour that day?
Saturn, from 06:46 to 07:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.