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, 4 October 2026: day of the Sun
- Sunrise
- 07:38
- Sunset
- 19:12
- Next sunrise
- 07:40
A day hour lasts 58 min; a night hour, 1h 02m. Local time (Europe/Paris).
Day
- 1☉︎ Sun07:38 – 08:36
- 2♀︎ Venus08:36 – 09:34
- 3☿︎ Mercury09:34 – 10:32
- 4☽︎ Moon10:32 – 11:29
- 5♄︎ Saturn11:29 – 12:27
- 6♃︎ Jupiter12:27 – 13:25
- 7♂︎ Mars13:25 – 14:23
- 8☉︎ Sun14:23 – 15:21
- 9♀︎ Venus15:21 – 16:18
- 10☿︎ Mercury16:18 – 17:16
- 11☽︎ Moon17:16 – 18:14
- 12♄︎ Saturn18:14 – 19:12
Night
- 1♃︎ Jupiter19:12 – 20:14
- 2♂︎ Mars20:14 – 21:16
- 3☉︎ Sun21:16 – 22:19
- 4♀︎ Venus22:19 – 23:21
- 5☿︎ Mercury23:21 – 00:23
- 6☽︎ Moon00:23 – 01:26
- 7♄︎ Saturn01:26 – 02:28
- 8♃︎ Jupiter02:28 – 03:30
- 9♂︎ Mars03:30 – 04:33
- 10☉︎ Sun04:33 – 05:35
- 11♀︎ Venus05:35 – 06:37
- 12☿︎ Mercury06:37 – 07:40
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Sunday, 4 October 2026, the Sun rises at 07:38 and sets at 19:12: the day lasts 11h 33m, that is twelve day hours of 58 min. The night, until the next sunrise at 07:40, lasts 12h 28m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
The Sun, from 07:38 to 08:36: 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.