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, 1 April 2026: day of Mercury
- Sunrise
- 07:17
- Sunset
- 20:04
- Next sunrise
- 07:16
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:17 – 08:21
- 2☽︎ Moon08:21 – 09:25
- 3♄︎ Saturn09:25 – 10:29
- 4♃︎ Jupiter10:29 – 11:33
- 5♂︎ Mars11:33 – 12:37
- 6☉︎ Sun12:37 – 13:41
- 7♀︎ Venus13:41 – 14:45
- 8☿︎ Mercury14:45 – 15:49
- 9☽︎ Moon15:49 – 16:53
- 10♄︎ Saturn16:53 – 17:57
- 11♃︎ Jupiter17:57 – 19:01
- 12♂︎ Mars19:01 – 20:04
Night
- 1☉︎ Sun20:04 – 21:00
- 2♀︎ Venus21:00 – 21:56
- 3☿︎ Mercury21:56 – 22:52
- 4☽︎ Moon22:52 – 23:48
- 5♄︎ Saturn23:48 – 00:44
- 6♃︎ Jupiter00:44 – 01:40
- 7♂︎ Mars01:40 – 02:36
- 8☉︎ Sun02:36 – 03:32
- 9♀︎ Venus03:32 – 04:28
- 10☿︎ Mercury04:28 – 05:24
- 11☽︎ Moon05:24 – 06:20
- 12♄︎ Saturn06:20 – 07:16
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 1 April 2026, the Sun rises at 07:17 and sets at 20:04: the day lasts 12h 47m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 07:16, lasts 11h 11m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Mercury, from 07:17 to 08:21: 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.