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, 17 August 2026: day of the Moon
- Sunrise
- 06:40
- Sunset
- 20:40
- Next sunrise
- 06:41
A day hour lasts 1h 10m; a night hour, 50 min. Local time (Europe/Paris).
Day
- 1☽︎ Moon06:40 – 07:50
- 2♄︎ Saturn07:50 – 09:00
- 3♃︎ Jupiter09:00 – 10:10
- 4♂︎ Mars10:10 – 11:20
- 5☉︎ Sun11:20 – 12:30
- 6♀︎ Venus12:30 – 13:40
- 7☿︎ Mercury13:40 – 14:50
- 8☽︎ Moon14:50 – 16:00
- 9♄︎ Saturn16:00 – 17:10
- 10♃︎ Jupiter17:10 – 18:20
- 11♂︎ Mars18:20 – 19:30
- 12☉︎ Sun19:30 – 20:40
Night
- 1♀︎ Venus20:40 – 21:31
- 2☿︎ Mercury21:31 – 22:21
- 3☽︎ Moon22:21 – 23:11
- 4♄︎ Saturn23:11 – 00:01
- 5♃︎ Jupiter00:01 – 00:51
- 6♂︎ Mars00:51 – 01:41
- 7☉︎ Sun01:41 – 02:31
- 8♀︎ Venus02:31 – 03:21
- 9☿︎ Mercury03:21 – 04:11
- 10☽︎ Moon04:11 – 05:01
- 11♄︎ Saturn05:01 – 05:51
- 12♃︎ Jupiter05:51 – 06:41
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Monday, 17 August 2026, the Sun rises at 06:40 and sets at 20:40: the day lasts 14h 00m, that is twelve day hours of 1h 10m. The night, until the next sunrise at 06:41, lasts 10h 01m: twelve night hours of 50 min.
Which planet rules the first hour that day?
The Moon, from 06:40 to 07:50: 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.