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, 3 October 2026: day of Saturn
- Sunrise
- 07:37
- Sunset
- 19:14
- Next sunrise
- 07:38
A day hour lasts 58 min; a night hour, 1h 02m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:37 – 08:35
- 2♃︎ Jupiter08:35 – 09:33
- 3♂︎ Mars09:33 – 10:31
- 4☉︎ Sun10:31 – 11:29
- 5♀︎ Venus11:29 – 12:27
- 6☿︎ Mercury12:27 – 13:25
- 7☽︎ Moon13:25 – 14:23
- 8♄︎ Saturn14:23 – 15:21
- 9♃︎ Jupiter15:21 – 16:19
- 10♂︎ Mars16:19 – 17:17
- 11☉︎ Sun17:17 – 18:16
- 12♀︎ Venus18:16 – 19:14
Night
- 1☿︎ Mercury19:14 – 20:16
- 2☽︎ Moon20:16 – 21:18
- 3♄︎ Saturn21:18 – 22:20
- 4♃︎ Jupiter22:20 – 23:22
- 5♂︎ Mars23:22 – 00:24
- 6☉︎ Sun00:24 – 01:26
- 7♀︎ Venus01:26 – 02:28
- 8☿︎ Mercury02:28 – 03:30
- 9☽︎ Moon03:30 – 04:32
- 10♄︎ Saturn04:32 – 05:34
- 11♃︎ Jupiter05:34 – 06:36
- 12♂︎ Mars06:36 – 07:38
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 3 October 2026, the Sun rises at 07:37 and sets at 19:14: the day lasts 11h 37m, that is twelve day hours of 58 min. The night, until the next sunrise at 07:38, lasts 12h 25m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
Saturn, from 07:37 to 08:35: 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.