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 Sunday, 12 April 2026: day of the Sun
- Sunrise
- 06:57
- Sunset
- 20:18
- Next sunrise
- 06:56
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Europe/Paris).
Day
- 1☉︎ Sun06:57 – 08:04
- 2♀︎ Venus08:04 – 09:11
- 3☿︎ Mercury09:11 – 10:18
- 4☽︎ Moon10:18 – 11:24
- 5♄︎ Saturn11:24 – 12:31
- 6♃︎ Jupiter12:31 – 13:38
- 7♂︎ Mars13:38 – 14:45
- 8☉︎ Sun14:45 – 15:51
- 9♀︎ Venus15:51 – 16:58
- 10☿︎ Mercury16:58 – 18:05
- 11☽︎ Moon18:05 – 19:12
- 12♄︎ Saturn19:12 – 20:18
Night
- 1♃︎ Jupiter20:18 – 21:12
- 2♂︎ Mars21:12 – 22:05
- 3☉︎ Sun22:05 – 22:58
- 4♀︎ Venus22:58 – 23:51
- 5☿︎ Mercury23:51 – 00:44
- 6☽︎ Moon00:44 – 01:37
- 7♄︎ Saturn01:37 – 02:30
- 8♃︎ Jupiter02:30 – 03:23
- 9♂︎ Mars03:23 – 04:16
- 10☉︎ Sun04:16 – 05:09
- 11♀︎ Venus05:09 – 06:02
- 12☿︎ Mercury06:02 – 06:56
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Sunday, 12 April 2026, the Sun rises at 06:57 and sets at 20:18: the day lasts 13h 21m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 06:56, lasts 10h 37m: twelve night hours of 53 min.
Which planet rules the first hour that day?
The Sun, from 06:57 to 08:04: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.