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, 18 July 2026: day of Saturn
- Sunrise
- 06:06
- Sunset
- 21:19
- Next sunrise
- 06:07
A day hour lasts 1h 16m; a night hour, 44 min. Local time (Europe/Paris).
Day
- 1♄︎ Saturn06:06 – 07:22
- 2♃︎ Jupiter07:22 – 08:38
- 3♂︎ Mars08:38 – 09:55
- 4☉︎ Sun09:55 – 11:11
- 5♀︎ Venus11:11 – 12:27
- 6☿︎ Mercury12:27 – 13:43
- 7☽︎ Moon13:43 – 14:59
- 8♄︎ Saturn14:59 – 16:15
- 9♃︎ Jupiter16:15 – 17:31
- 10♂︎ Mars17:31 – 18:47
- 11☉︎ Sun18:47 – 20:03
- 12♀︎ Venus20:03 – 21:19
Night
- 1☿︎ Mercury21:19 – 22:03
- 2☽︎ Moon22:03 – 22:47
- 3♄︎ Saturn22:47 – 23:31
- 4♃︎ Jupiter23:31 – 00:15
- 5♂︎ Mars00:15 – 00:59
- 6☉︎ Sun00:59 – 01:43
- 7♀︎ Venus01:43 – 02:27
- 8☿︎ Mercury02:27 – 03:11
- 9☽︎ Moon03:11 – 03:55
- 10♄︎ Saturn03:55 – 04:39
- 11♃︎ Jupiter04:39 – 05:23
- 12♂︎ Mars05:23 – 06:07
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 18 July 2026, the Sun rises at 06:06 and sets at 21:19: the day lasts 15h 13m, that is twelve day hours of 1h 16m. The night, until the next sunrise at 06:07, lasts 8h 48m: twelve night hours of 44 min.
Which planet rules the first hour that day?
Saturn, from 06:06 to 07:22: 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.