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 Wednesday, 28 October 2026: day of Mercury
- Sunrise
- 07:10
- Sunset
- 17:30
- Next sunrise
- 07:11
A day hour lasts 52 min; a night hour, 1h 08m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:10 – 08:02
- 2☽︎ Moon08:02 – 08:53
- 3♄︎ Saturn08:53 – 09:45
- 4♃︎ Jupiter09:45 – 10:37
- 5♂︎ Mars10:37 – 11:28
- 6☉︎ Sun11:28 – 12:20
- 7♀︎ Venus12:20 – 13:12
- 8☿︎ Mercury13:12 – 14:04
- 9☽︎ Moon14:04 – 14:55
- 10♄︎ Saturn14:55 – 15:47
- 11♃︎ Jupiter15:47 – 16:39
- 12♂︎ Mars16:39 – 17:30
Night
- 1☉︎ Sun17:30 – 18:39
- 2♀︎ Venus18:39 – 19:47
- 3☿︎ Mercury19:47 – 20:56
- 4☽︎ Moon20:56 – 22:04
- 5♄︎ Saturn22:04 – 23:12
- 6♃︎ Jupiter23:12 – 00:21
- 7♂︎ Mars00:21 – 01:29
- 8☉︎ Sun01:29 – 02:38
- 9♀︎ Venus02:38 – 03:46
- 10☿︎ Mercury03:46 – 04:54
- 11☽︎ Moon04:54 – 06:03
- 12♄︎ Saturn06:03 – 07:11
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 28 October 2026, the Sun rises at 07:10 and sets at 17:30: the day lasts 10h 21m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:11, lasts 13h 41m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mercury, from 07:10 to 08:02: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.