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, 12 May 2026: day of Mars
- Sunrise
- 06:11
- Sunset
- 20:56
- Next sunrise
- 06:10
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars06:11 – 07:25
- 2☉︎ Sun07:25 – 08:38
- 3♀︎ Venus08:38 – 09:52
- 4☿︎ Mercury09:52 – 11:06
- 5☽︎ Moon11:06 – 12:20
- 6♄︎ Saturn12:20 – 13:33
- 7♃︎ Jupiter13:33 – 14:47
- 8♂︎ Mars14:47 – 16:01
- 9☉︎ Sun16:01 – 17:15
- 10♀︎ Venus17:15 – 18:28
- 11☿︎ Mercury18:28 – 19:42
- 12☽︎ Moon19:42 – 20:56
Night
- 1♄︎ Saturn20:56 – 21:42
- 2♃︎ Jupiter21:42 – 22:28
- 3♂︎ Mars22:28 – 23:14
- 4☉︎ Sun23:14 – 00:01
- 5♀︎ Venus00:01 – 00:47
- 6☿︎ Mercury00:47 – 01:33
- 7☽︎ Moon01:33 – 02:19
- 8♄︎ Saturn02:19 – 03:05
- 9♃︎ Jupiter03:05 – 03:51
- 10♂︎ Mars03:51 – 04:37
- 11☉︎ Sun04:37 – 05:23
- 12♀︎ Venus05:23 – 06:10
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Tuesday, 12 May 2026, the Sun rises at 06:11 and sets at 20:56: the day lasts 14h 45m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 06:10, lasts 9h 14m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mars, from 06:11 to 07:25: 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.