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, 23 August 2026: day of the Sun
- Sunrise
- 06:47
- Sunset
- 20:30
- Next sunrise
- 06:49
A day hour lasts 1h 09m; a night hour, 52 min. Local time (Europe/Paris).
Day
- 1☉︎ Sun06:47 – 07:56
- 2♀︎ Venus07:56 – 09:05
- 3☿︎ Mercury09:05 – 10:13
- 4☽︎ Moon10:13 – 11:22
- 5♄︎ Saturn11:22 – 12:30
- 6♃︎ Jupiter12:30 – 13:39
- 7♂︎ Mars13:39 – 14:47
- 8☉︎ Sun14:47 – 15:56
- 9♀︎ Venus15:56 – 17:05
- 10☿︎ Mercury17:05 – 18:13
- 11☽︎ Moon18:13 – 19:22
- 12♄︎ Saturn19:22 – 20:30
Night
- 1♃︎ Jupiter20:30 – 21:22
- 2♂︎ Mars21:22 – 22:13
- 3☉︎ Sun22:13 – 23:05
- 4♀︎ Venus23:05 – 23:56
- 5☿︎ Mercury23:56 – 00:48
- 6☽︎ Moon00:48 – 01:39
- 7♄︎ Saturn01:39 – 02:31
- 8♃︎ Jupiter02:31 – 03:23
- 9♂︎ Mars03:23 – 04:14
- 10☉︎ Sun04:14 – 05:06
- 11♀︎ Venus05:06 – 05:57
- 12☿︎ Mercury05:57 – 06:49
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Sunday, 23 August 2026, the Sun rises at 06:47 and sets at 20:30: the day lasts 13h 43m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:49, lasts 10h 18m: twelve night hours of 52 min.
Which planet rules the first hour that day?
The Sun, from 06:47 to 07:56: 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.