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, 3 February 2026: day of Mars
- Sunrise
- 07:55
- Sunset
- 17:47
- Next sunrise
- 07:53
A day hour lasts 49 min; a night hour, 1h 11m. Local time (Europe/Paris).
Day
- 1♂︎ Mars07:55 – 08:44
- 2☉︎ Sun08:44 – 09:33
- 3♀︎ Venus09:33 – 10:23
- 4☿︎ Mercury10:23 – 11:12
- 5☽︎ Moon11:12 – 12:01
- 6♄︎ Saturn12:01 – 12:51
- 7♃︎ Jupiter12:51 – 13:40
- 8♂︎ Mars13:40 – 14:29
- 9☉︎ Sun14:29 – 15:19
- 10♀︎ Venus15:19 – 16:08
- 11☿︎ Mercury16:08 – 16:57
- 12☽︎ Moon16:57 – 17:47
Night
- 1♄︎ Saturn17:47 – 18:57
- 2♃︎ Jupiter18:57 – 20:08
- 3♂︎ Mars20:08 – 21:18
- 4☉︎ Sun21:18 – 22:29
- 5♀︎ Venus22:29 – 23:40
- 6☿︎ Mercury23:40 – 00:50
- 7☽︎ Moon00:50 – 02:01
- 8♄︎ Saturn02:01 – 03:11
- 9♃︎ Jupiter03:11 – 04:22
- 10♂︎ Mars04:22 – 05:32
- 11☉︎ Sun05:32 – 06:43
- 12♀︎ Venus06:43 – 07:53
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Tuesday, 3 February 2026, the Sun rises at 07:55 and sets at 17:47: the day lasts 9h 52m, that is twelve day hours of 49 min. The night, until the next sunrise at 07:53, lasts 14h 07m: twelve night hours of 1h 11m.
Which planet rules the first hour that day?
Mars, from 07:55 to 08:44: 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.