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, 29 August 2026: day of Saturn
- Sunrise
- 06:55
- Sunset
- 20:20
- Next sunrise
- 06:56
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn06:55 – 08:02
- 2♃︎ Jupiter08:02 – 09:09
- 3♂︎ Mars09:09 – 10:16
- 4☉︎ Sun10:16 – 11:23
- 5♀︎ Venus11:23 – 12:30
- 6☿︎ Mercury12:30 – 13:37
- 7☽︎ Moon13:37 – 14:44
- 8♄︎ Saturn14:44 – 15:51
- 9♃︎ Jupiter15:51 – 16:58
- 10♂︎ Mars16:58 – 18:06
- 11☉︎ Sun18:06 – 19:13
- 12♀︎ Venus19:13 – 20:20
Night
- 1☿︎ Mercury20:20 – 21:13
- 2☽︎ Moon21:13 – 22:06
- 3♄︎ Saturn22:06 – 22:59
- 4♃︎ Jupiter22:59 – 23:52
- 5♂︎ Mars23:52 – 00:45
- 6☉︎ Sun00:45 – 01:38
- 7♀︎ Venus01:38 – 02:31
- 8☿︎ Mercury02:31 – 03:24
- 9☽︎ Moon03:24 – 04:17
- 10♄︎ Saturn04:17 – 05:10
- 11♃︎ Jupiter05:10 – 06:03
- 12♂︎ Mars06:03 – 06:56
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 29 August 2026, the Sun rises at 06:55 and sets at 20:20: the day lasts 13h 25m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 06:56, lasts 10h 36m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Saturn, from 06:55 to 08:02: 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.