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, 18 May 2026: day of the Moon
- Sunrise
- 06:04
- Sunset
- 21:03
- Next sunrise
- 06:03
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Paris).
Day
- 1☽︎ Moon06:04 – 07:19
- 2♄︎ Saturn07:19 – 08:34
- 3♃︎ Jupiter08:34 – 09:49
- 4♂︎ Mars09:49 – 11:04
- 5☉︎ Sun11:04 – 12:19
- 6♀︎ Venus12:19 – 13:33
- 7☿︎ Mercury13:33 – 14:48
- 8☽︎ Moon14:48 – 16:03
- 9♄︎ Saturn16:03 – 17:18
- 10♃︎ Jupiter17:18 – 18:33
- 11♂︎ Mars18:33 – 19:48
- 12☉︎ Sun19:48 – 21:03
Night
- 1♀︎ Venus21:03 – 21:48
- 2☿︎ Mercury21:48 – 22:33
- 3☽︎ Moon22:33 – 23:18
- 4♄︎ Saturn23:18 – 00:03
- 5♃︎ Jupiter00:03 – 00:48
- 6♂︎ Mars00:48 – 01:33
- 7☉︎ Sun01:33 – 02:18
- 8♀︎ Venus02:18 – 03:03
- 9☿︎ Mercury03:03 – 03:48
- 10☽︎ Moon03:48 – 04:33
- 11♄︎ Saturn04:33 – 05:18
- 12♃︎ Jupiter05:18 – 06:03
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Monday, 18 May 2026, the Sun rises at 06:04 and sets at 21:03: the day lasts 14h 59m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:03, lasts 9h 00m: twelve night hours of 45 min.
Which planet rules the first hour that day?
The Moon, from 06:04 to 07:19: 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.