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 Tuesday, 11 August 2026: day of Mars
- Sunrise
- 06:33
- Sunset
- 20:50
- Next sunrise
- 06:34
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars06:33 – 07:44
- 2☉︎ Sun07:44 – 08:56
- 3♀︎ Venus08:56 – 10:07
- 4☿︎ Mercury10:07 – 11:19
- 5☽︎ Moon11:19 – 12:30
- 6♄︎ Saturn12:30 – 13:41
- 7♃︎ Jupiter13:41 – 14:53
- 8♂︎ Mars14:53 – 16:04
- 9☉︎ Sun16:04 – 17:16
- 10♀︎ Venus17:16 – 18:27
- 11☿︎ Mercury18:27 – 19:38
- 12☽︎ Moon19:38 – 20:50
Night
- 1♄︎ Saturn20:50 – 21:39
- 2♃︎ Jupiter21:39 – 22:27
- 3♂︎ Mars22:27 – 23:16
- 4☉︎ Sun23:16 – 00:05
- 5♀︎ Venus00:05 – 00:53
- 6☿︎ Mercury00:53 – 01:42
- 7☽︎ Moon01:42 – 02:31
- 8♄︎ Saturn02:31 – 03:19
- 9♃︎ Jupiter03:19 – 04:08
- 10♂︎ Mars04:08 – 04:57
- 11☉︎ Sun04:57 – 05:46
- 12♀︎ Venus05:46 – 06:34
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Tuesday, 11 August 2026, the Sun rises at 06:33 and sets at 20:50: the day lasts 14h 17m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 06:34, lasts 9h 44m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mars, from 06:33 to 07:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.