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 Wednesday, 24 September 2025: day of Mercury
- Sunrise
- 07:26
- Sunset
- 19:30
- Next sunrise
- 07:27
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:26 – 08:27
- 2☽︎ Moon08:27 – 09:27
- 3♄︎ Saturn09:27 – 10:27
- 4♃︎ Jupiter10:27 – 11:28
- 5♂︎ Mars11:28 – 12:28
- 6☉︎ Sun12:28 – 13:28
- 7♀︎ Venus13:28 – 14:29
- 8☿︎ Mercury14:29 – 15:29
- 9☽︎ Moon15:29 – 16:29
- 10♄︎ Saturn16:29 – 17:30
- 11♃︎ Jupiter17:30 – 18:30
- 12♂︎ Mars18:30 – 19:30
Night
- 1☉︎ Sun19:30 – 20:30
- 2♀︎ Venus20:30 – 21:30
- 3☿︎ Mercury21:30 – 22:29
- 4☽︎ Moon22:29 – 23:29
- 5♄︎ Saturn23:29 – 00:29
- 6♃︎ Jupiter00:29 – 01:29
- 7♂︎ Mars01:29 – 02:29
- 8☉︎ Sun02:29 – 03:28
- 9♀︎ Venus03:28 – 04:28
- 10☿︎ Mercury04:28 – 05:28
- 11☽︎ Moon05:28 – 06:28
- 12♄︎ Saturn06:28 – 07:27
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 24 September 2025, the Sun rises at 07:26 and sets at 19:30: the day lasts 12h 04m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 07:27, lasts 11h 57m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Mercury, from 07:26 to 08:27: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.