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 Thursday, 8 October 2026: day of Jupiter
- Sunrise
- 07:43
- Sunset
- 19:04
- Next sunrise
- 07:45
A day hour lasts 57 min; a night hour, 1h 03m. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter07:43 – 08:40
- 2♂︎ Mars08:40 – 09:37
- 3☉︎ Sun09:37 – 10:34
- 4♀︎ Venus10:34 – 11:30
- 5☿︎ Mercury11:30 – 12:27
- 6☽︎ Moon12:27 – 13:24
- 7♄︎ Saturn13:24 – 14:21
- 8♃︎ Jupiter14:21 – 15:17
- 9♂︎ Mars15:17 – 16:14
- 10☉︎ Sun16:14 – 17:11
- 11♀︎ Venus17:11 – 18:08
- 12☿︎ Mercury18:08 – 19:04
Night
- 1☽︎ Moon19:04 – 20:08
- 2♄︎ Saturn20:08 – 21:11
- 3♃︎ Jupiter21:11 – 22:14
- 4♂︎ Mars22:14 – 23:18
- 5☉︎ Sun23:18 – 00:21
- 6♀︎ Venus00:21 – 01:24
- 7☿︎ Mercury01:24 – 02:28
- 8☽︎ Moon02:28 – 03:31
- 9♄︎ Saturn03:31 – 04:35
- 10♃︎ Jupiter04:35 – 05:38
- 11♂︎ Mars05:38 – 06:41
- 12☉︎ Sun06:41 – 07:45
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Thursday, 8 October 2026, the Sun rises at 07:43 and sets at 19:04: the day lasts 11h 21m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:45, lasts 12h 40m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
Jupiter, from 07:43 to 08:40: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.