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 Monday, 21 July 2025: day of the Moon
- Sunrise
- 06:10
- Sunset
- 21:16
- Next sunrise
- 06:11
A day hour lasts 1h 16m; a night hour, 45 min. Local time (Europe/Paris).
Day
- 1☽︎ Moon06:10 – 07:25
- 2♄︎ Saturn07:25 – 08:41
- 3♃︎ Jupiter08:41 – 09:56
- 4♂︎ Mars09:56 – 11:12
- 5☉︎ Sun11:12 – 12:27
- 6♀︎ Venus12:27 – 13:43
- 7☿︎ Mercury13:43 – 14:58
- 8☽︎ Moon14:58 – 16:14
- 9♄︎ Saturn16:14 – 17:29
- 10♃︎ Jupiter17:29 – 18:45
- 11♂︎ Mars18:45 – 20:00
- 12☉︎ Sun20:00 – 21:16
Night
- 1♀︎ Venus21:16 – 22:01
- 2☿︎ Mercury22:01 – 22:45
- 3☽︎ Moon22:45 – 23:30
- 4♄︎ Saturn23:30 – 00:14
- 5♃︎ Jupiter00:14 – 00:59
- 6♂︎ Mars00:59 – 01:43
- 7☉︎ Sun01:43 – 02:28
- 8♀︎ Venus02:28 – 03:12
- 9☿︎ Mercury03:12 – 03:57
- 10☽︎ Moon03:57 – 04:42
- 11♄︎ Saturn04:42 – 05:26
- 12♃︎ Jupiter05:26 – 06:11
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Monday, 21 July 2025, the Sun rises at 06:10 and sets at 21:16: the day lasts 15h 06m, that is twelve day hours of 1h 16m. The night, until the next sunrise at 06:11, lasts 8h 55m: twelve night hours of 45 min.
Which planet rules the first hour that day?
The Moon, from 06:10 to 07:25: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.