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 Saturday, 19 December 2026: day of Saturn
- Sunrise
- 08:11
- Sunset
- 16:56
- Next sunrise
- 08:12
A day hour lasts 44 min; a night hour, 1h 16m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn08:11 – 08:55
- 2♃︎ Jupiter08:55 – 09:39
- 3♂︎ Mars09:39 – 10:22
- 4☉︎ Sun10:22 – 11:06
- 5♀︎ Venus11:06 – 11:50
- 6☿︎ Mercury11:50 – 12:34
- 7☽︎ Moon12:34 – 13:17
- 8♄︎ Saturn13:17 – 14:01
- 9♃︎ Jupiter14:01 – 14:45
- 10♂︎ Mars14:45 – 15:29
- 11☉︎ Sun15:29 – 16:12
- 12♀︎ Venus16:12 – 16:56
Night
- 1☿︎ Mercury16:56 – 18:12
- 2☽︎ Moon18:12 – 19:29
- 3♄︎ Saturn19:29 – 20:45
- 4♃︎ Jupiter20:45 – 22:01
- 5♂︎ Mars22:01 – 23:18
- 6☉︎ Sun23:18 – 00:34
- 7♀︎ Venus00:34 – 01:50
- 8☿︎ Mercury01:50 – 03:07
- 9☽︎ Moon03:07 – 04:23
- 10♄︎ Saturn04:23 – 05:39
- 11♃︎ Jupiter05:39 – 06:56
- 12♂︎ Mars06:56 – 08:12
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 19 December 2026, the Sun rises at 08:11 and sets at 16:56: the day lasts 8h 45m, that is twelve day hours of 44 min. The night, until the next sunrise at 08:12, lasts 15h 16m: twelve night hours of 1h 16m.
Which planet rules the first hour that day?
Saturn, from 08:11 to 08:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.