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 Sunday, 9 August 2026: day of the Sun
- Sunrise
- 06:31
- Sunset
- 20:53
- Next sunrise
- 06:32
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/Paris).
Day
- 1☉︎ Sun06:31 – 07:43
- 2♀︎ Venus07:43 – 08:54
- 3☿︎ Mercury08:54 – 10:06
- 4☽︎ Moon10:06 – 11:18
- 5♄︎ Saturn11:18 – 12:30
- 6♃︎ Jupiter12:30 – 13:42
- 7♂︎ Mars13:42 – 14:54
- 8☉︎ Sun14:54 – 16:05
- 9♀︎ Venus16:05 – 17:17
- 10☿︎ Mercury17:17 – 18:29
- 11☽︎ Moon18:29 – 19:41
- 12♄︎ Saturn19:41 – 20:53
Night
- 1♃︎ Jupiter20:53 – 21:41
- 2♂︎ Mars21:41 – 22:29
- 3☉︎ Sun22:29 – 23:18
- 4♀︎ Venus23:18 – 00:06
- 5☿︎ Mercury00:06 – 00:54
- 6☽︎ Moon00:54 – 01:42
- 7♄︎ Saturn01:42 – 02:31
- 8♃︎ Jupiter02:31 – 03:19
- 9♂︎ Mars03:19 – 04:07
- 10☉︎ Sun04:07 – 04:55
- 11♀︎ Venus04:55 – 05:44
- 12☿︎ Mercury05:44 – 06:32
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Sunday, 9 August 2026, the Sun rises at 06:31 and sets at 20:53: the day lasts 14h 22m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 06:32, lasts 9h 39m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Sun, from 06:31 to 07:43: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.