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, 12 September 2026: day of Saturn
- Sunrise
- 07:11
- Sunset
- 19:54
- Next sunrise
- 07:13
A day hour lasts 1h 04m; a night hour, 57 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:11 – 08:15
- 2♃︎ Jupiter08:15 – 09:18
- 3♂︎ Mars09:18 – 10:22
- 4☉︎ Sun10:22 – 11:25
- 5♀︎ Venus11:25 – 12:29
- 6☿︎ Mercury12:29 – 13:33
- 7☽︎ Moon13:33 – 14:36
- 8♄︎ Saturn14:36 – 15:40
- 9♃︎ Jupiter15:40 – 16:43
- 10♂︎ Mars16:43 – 17:47
- 11☉︎ Sun17:47 – 18:50
- 12♀︎ Venus18:50 – 19:54
Night
- 1☿︎ Mercury19:54 – 20:50
- 2☽︎ Moon20:50 – 21:47
- 3♄︎ Saturn21:47 – 22:43
- 4♃︎ Jupiter22:43 – 23:40
- 5♂︎ Mars23:40 – 00:37
- 6☉︎ Sun00:37 – 01:33
- 7♀︎ Venus01:33 – 02:30
- 8☿︎ Mercury02:30 – 03:26
- 9☽︎ Moon03:26 – 04:23
- 10♄︎ Saturn04:23 – 05:19
- 11♃︎ Jupiter05:19 – 06:16
- 12♂︎ Mars06:16 – 07:13
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 12 September 2026, the Sun rises at 07:11 and sets at 19:54: the day lasts 12h 42m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 07:13, lasts 11h 19m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Saturn, from 07:11 to 08:15: 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.