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, 27 September 2026: day of the Sun
- Sunrise
- 07:30
- Sunset
- 19:25
- Next sunrise
- 07:31
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Europe/Paris).
Day
- 1☉︎ Sun07:30 – 08:29
- 2♀︎ Venus08:29 – 09:29
- 3☿︎ Mercury09:29 – 10:28
- 4☽︎ Moon10:28 – 11:28
- 5♄︎ Saturn11:28 – 12:28
- 6♃︎ Jupiter12:28 – 13:27
- 7♂︎ Mars13:27 – 14:27
- 8☉︎ Sun14:27 – 15:26
- 9♀︎ Venus15:26 – 16:26
- 10☿︎ Mercury16:26 – 17:26
- 11☽︎ Moon17:26 – 18:25
- 12♄︎ Saturn18:25 – 19:25
Night
- 1♃︎ Jupiter19:25 – 20:25
- 2♂︎ Mars20:25 – 21:26
- 3☉︎ Sun21:26 – 22:26
- 4♀︎ Venus22:26 – 23:27
- 5☿︎ Mercury23:27 – 00:27
- 6☽︎ Moon00:27 – 01:28
- 7♄︎ Saturn01:28 – 02:28
- 8♃︎ Jupiter02:28 – 03:29
- 9♂︎ Mars03:29 – 04:29
- 10☉︎ Sun04:29 – 05:30
- 11♀︎ Venus05:30 – 06:30
- 12☿︎ Mercury06:30 – 07:31
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Sunday, 27 September 2026, the Sun rises at 07:30 and sets at 19:25: the day lasts 11h 55m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 07:31, lasts 12h 06m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
The Sun, from 07:30 to 08:29: 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.