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 Monday, 20 April 2026: day of the Moon
- Sunrise
- 06:43
- Sunset
- 20:29
- Next sunrise
- 06:42
A day hour lasts 1h 09m; a night hour, 51 min. Local time (Europe/Paris).
Day
- 1☽︎ Moon06:43 – 07:52
- 2♄︎ Saturn07:52 – 09:01
- 3♃︎ Jupiter09:01 – 10:10
- 4♂︎ Mars10:10 – 11:18
- 5☉︎ Sun11:18 – 12:27
- 6♀︎ Venus12:27 – 13:36
- 7☿︎ Mercury13:36 – 14:45
- 8☽︎ Moon14:45 – 15:54
- 9♄︎ Saturn15:54 – 17:02
- 10♃︎ Jupiter17:02 – 18:11
- 11♂︎ Mars18:11 – 19:20
- 12☉︎ Sun19:20 – 20:29
Night
- 1♀︎ Venus20:29 – 21:20
- 2☿︎ Mercury21:20 – 22:11
- 3☽︎ Moon22:11 – 23:02
- 4♄︎ Saturn23:02 – 23:53
- 5♃︎ Jupiter23:53 – 00:44
- 6♂︎ Mars00:44 – 01:35
- 7☉︎ Sun01:35 – 02:26
- 8♀︎ Venus02:26 – 03:17
- 9☿︎ Mercury03:17 – 04:08
- 10☽︎ Moon04:08 – 05:00
- 11♄︎ Saturn05:00 – 05:51
- 12♃︎ Jupiter05:51 – 06:42
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Monday, 20 April 2026, the Sun rises at 06:43 and sets at 20:29: the day lasts 13h 45m, that is twelve day hours of 1h 09m. The night, until the next sunrise at 06:42, lasts 10h 13m: twelve night hours of 51 min.
Which planet rules the first hour that day?
The Moon, from 06:43 to 07:52: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.