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, 4 April 2026: day of Saturn
- Sunrise
- 07:12
- Sunset
- 20:08
- Next sunrise
- 07:10
A day hour lasts 1h 05m; a night hour, 55 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:12 – 08:17
- 2♃︎ Jupiter08:17 – 09:21
- 3♂︎ Mars09:21 – 10:26
- 4☉︎ Sun10:26 – 11:31
- 5♀︎ Venus11:31 – 12:35
- 6☿︎ Mercury12:35 – 13:40
- 7☽︎ Moon13:40 – 14:45
- 8♄︎ Saturn14:45 – 15:49
- 9♃︎ Jupiter15:49 – 16:54
- 10♂︎ Mars16:54 – 17:59
- 11☉︎ Sun17:59 – 19:04
- 12♀︎ Venus19:04 – 20:08
Night
- 1☿︎ Mercury20:08 – 21:03
- 2☽︎ Moon21:03 – 21:59
- 3♄︎ Saturn21:59 – 22:54
- 4♃︎ Jupiter22:54 – 23:49
- 5♂︎ Mars23:49 – 00:44
- 6☉︎ Sun00:44 – 01:39
- 7♀︎ Venus01:39 – 02:34
- 8☿︎ Mercury02:34 – 03:29
- 9☽︎ Moon03:29 – 04:25
- 10♄︎ Saturn04:25 – 05:20
- 11♃︎ Jupiter05:20 – 06:15
- 12♂︎ Mars06:15 – 07:10
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 4 April 2026, the Sun rises at 07:12 and sets at 20:08: the day lasts 12h 56m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 07:10, lasts 11h 02m: twelve night hours of 55 min.
Which planet rules the first hour that day?
Saturn, from 07:12 to 08:17: 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.