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, 8 September 2026: day of Mars
- Sunrise
- 07:07
- Sunset
- 20:01
- Next sunrise
- 07:08
A day hour lasts 1h 05m; a night hour, 56 min. Local time (Europe/Paris).
Day
- 1♂︎ Mars07:07 – 08:11
- 2☉︎ Sun08:11 – 09:16
- 3♀︎ Venus09:16 – 10:20
- 4☿︎ Mercury10:20 – 11:25
- 5☽︎ Moon11:25 – 12:29
- 6♄︎ Saturn12:29 – 13:34
- 7♃︎ Jupiter13:34 – 14:38
- 8♂︎ Mars14:38 – 15:43
- 9☉︎ Sun15:43 – 16:48
- 10♀︎ Venus16:48 – 17:52
- 11☿︎ Mercury17:52 – 18:57
- 12☽︎ Moon18:57 – 20:01
Night
- 1♄︎ Saturn20:01 – 20:57
- 2♃︎ Jupiter20:57 – 21:52
- 3♂︎ Mars21:52 – 22:48
- 4☉︎ Sun22:48 – 23:43
- 5♀︎ Venus23:43 – 00:39
- 6☿︎ Mercury00:39 – 01:35
- 7☽︎ Moon01:35 – 02:30
- 8♄︎ Saturn02:30 – 03:26
- 9♃︎ Jupiter03:26 – 04:21
- 10♂︎ Mars04:21 – 05:17
- 11☉︎ Sun05:17 – 06:12
- 12♀︎ Venus06:12 – 07:08
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Tuesday, 8 September 2026, the Sun rises at 07:07 and sets at 20:01: the day lasts 12h 55m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 07:08, lasts 11h 07m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mars, from 07:07 to 08:11: 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.