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, 1 August 2026: day of Saturn
- Sunrise
- 06:21
- Sunset
- 21:04
- Next sunrise
- 06:22
A day hour lasts 1h 14m; a night hour, 47 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn06:21 – 07:35
- 2♃︎ Jupiter07:35 – 08:48
- 3♂︎ Mars08:48 – 10:02
- 4☉︎ Sun10:02 – 11:16
- 5♀︎ Venus11:16 – 12:29
- 6☿︎ Mercury12:29 – 13:43
- 7☽︎ Moon13:43 – 14:56
- 8♄︎ Saturn14:56 – 16:10
- 9♃︎ Jupiter16:10 – 17:23
- 10♂︎ Mars17:23 – 18:37
- 11☉︎ Sun18:37 – 19:50
- 12♀︎ Venus19:50 – 21:04
Night
- 1☿︎ Mercury21:04 – 21:50
- 2☽︎ Moon21:50 – 22:37
- 3♄︎ Saturn22:37 – 23:24
- 4♃︎ Jupiter23:24 – 00:10
- 5♂︎ Mars00:10 – 00:57
- 6☉︎ Sun00:57 – 01:43
- 7♀︎ Venus01:43 – 02:30
- 8☿︎ Mercury02:30 – 03:16
- 9☽︎ Moon03:16 – 04:03
- 10♄︎ Saturn04:03 – 04:49
- 11♃︎ Jupiter04:49 – 05:36
- 12♂︎ Mars05:36 – 06:22
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 1 August 2026, the Sun rises at 06:21 and sets at 21:04: the day lasts 14h 43m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 06:22, lasts 9h 19m: twelve night hours of 47 min.
Which planet rules the first hour that day?
Saturn, from 06:21 to 07:35: 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.