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, 26 August 2026: day of Mercury
- Sunrise
- 06:51
- Sunset
- 20:25
- Next sunrise
- 06:52
A day hour lasts 1h 08m; a night hour, 52 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury06:51 – 07:59
- 2☽︎ Moon07:59 – 09:07
- 3♄︎ Saturn09:07 – 10:15
- 4♃︎ Jupiter10:15 – 11:22
- 5♂︎ Mars11:22 – 12:30
- 6☉︎ Sun12:30 – 13:38
- 7♀︎ Venus13:38 – 14:46
- 8☿︎ Mercury14:46 – 15:54
- 9☽︎ Moon15:54 – 17:02
- 10♄︎ Saturn17:02 – 18:09
- 11♃︎ Jupiter18:09 – 19:17
- 12♂︎ Mars19:17 – 20:25
Night
- 1☉︎ Sun20:25 – 21:17
- 2♀︎ Venus21:17 – 22:10
- 3☿︎ Mercury22:10 – 23:02
- 4☽︎ Moon23:02 – 23:54
- 5♄︎ Saturn23:54 – 00:46
- 6♃︎ Jupiter00:46 – 01:39
- 7♂︎ Mars01:39 – 02:31
- 8☉︎ Sun02:31 – 03:23
- 9♀︎ Venus03:23 – 04:15
- 10☿︎ Mercury04:15 – 05:08
- 11☽︎ Moon05:08 – 06:00
- 12♄︎ Saturn06:00 – 06:52
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 26 August 2026, the Sun rises at 06:51 and sets at 20:25: the day lasts 13h 34m, that is twelve day hours of 1h 08m. The night, until the next sunrise at 06:52, lasts 10h 27m: twelve night hours of 52 min.
Which planet rules the first hour that day?
Mercury, from 06:51 to 07:59: 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.