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, 15 October 2026: day of Jupiter
- Sunrise
- 07:52
- Sunset
- 18:52
- Next sunrise
- 07:54
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter07:52 – 08:47
- 2♂︎ Mars08:47 – 09:42
- 3☉︎ Sun09:42 – 10:37
- 4♀︎ Venus10:37 – 11:32
- 5☿︎ Mercury11:32 – 12:27
- 6☽︎ Moon12:27 – 13:22
- 7♄︎ Saturn13:22 – 14:17
- 8♃︎ Jupiter14:17 – 15:12
- 9♂︎ Mars15:12 – 16:07
- 10☉︎ Sun16:07 – 17:02
- 11♀︎ Venus17:02 – 17:57
- 12☿︎ Mercury17:57 – 18:52
Night
- 1☽︎ Moon18:52 – 19:57
- 2♄︎ Saturn19:57 – 21:02
- 3♃︎ Jupiter21:02 – 22:07
- 4♂︎ Mars22:07 – 23:12
- 5☉︎ Sun23:12 – 00:18
- 6♀︎ Venus00:18 – 01:23
- 7☿︎ Mercury01:23 – 02:28
- 8☽︎ Moon02:28 – 03:33
- 9♄︎ Saturn03:33 – 04:38
- 10♃︎ Jupiter04:38 – 05:43
- 11♂︎ Mars05:43 – 06:49
- 12☉︎ Sun06:49 – 07:54
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Thursday, 15 October 2026, the Sun rises at 07:52 and sets at 18:52: the day lasts 10h 59m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:54, lasts 13h 02m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Jupiter, from 07:52 to 08:47: 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.