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, 26 September 2026: day of Saturn
- Sunrise
- 07:28
- Sunset
- 19:27
- Next sunrise
- 07:30
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:28 – 08:28
- 2♃︎ Jupiter08:28 – 09:28
- 3♂︎ Mars09:28 – 10:28
- 4☉︎ Sun10:28 – 11:28
- 5♀︎ Venus11:28 – 12:28
- 6☿︎ Mercury12:28 – 13:28
- 7☽︎ Moon13:28 – 14:27
- 8♄︎ Saturn14:27 – 15:27
- 9♃︎ Jupiter15:27 – 16:27
- 10♂︎ Mars16:27 – 17:27
- 11☉︎ Sun17:27 – 18:27
- 12♀︎ Venus18:27 – 19:27
Night
- 1☿︎ Mercury19:27 – 20:27
- 2☽︎ Moon20:27 – 21:27
- 3♄︎ Saturn21:27 – 22:28
- 4♃︎ Jupiter22:28 – 23:28
- 5♂︎ Mars23:28 – 00:28
- 6☉︎ Sun00:28 – 01:28
- 7♀︎ Venus01:28 – 02:28
- 8☿︎ Mercury02:28 – 03:29
- 9☽︎ Moon03:29 – 04:29
- 10♄︎ Saturn04:29 – 05:29
- 11♃︎ Jupiter05:29 – 06:29
- 12♂︎ Mars06:29 – 07:30
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 26 September 2026, the Sun rises at 07:28 and sets at 19:27: the day lasts 11h 58m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 07:30, lasts 12h 03m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Saturn, from 07:28 to 08:28: 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.