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, 4 March 2026: day of Mercury
- Sunrise
- 07:10
- Sunset
- 18:28
- Next sunrise
- 07:08
A day hour lasts 57 min; a night hour, 1h 03m. Local time (Europe/Paris).
Day
- 1☿︎ Mercury07:10 – 08:06
- 2☽︎ Moon08:06 – 09:03
- 3♄︎ Saturn09:03 – 09:59
- 4♃︎ Jupiter09:59 – 10:56
- 5♂︎ Mars10:56 – 11:52
- 6☉︎ Sun11:52 – 12:49
- 7♀︎ Venus12:49 – 13:45
- 8☿︎ Mercury13:45 – 14:42
- 9☽︎ Moon14:42 – 15:38
- 10♄︎ Saturn15:38 – 16:35
- 11♃︎ Jupiter16:35 – 17:31
- 12♂︎ Mars17:31 – 18:28
Night
- 1☉︎ Sun18:28 – 19:31
- 2♀︎ Venus19:31 – 20:34
- 3☿︎ Mercury20:34 – 21:38
- 4☽︎ Moon21:38 – 22:41
- 5♄︎ Saturn22:41 – 23:44
- 6♃︎ Jupiter23:44 – 00:48
- 7♂︎ Mars00:48 – 01:51
- 8☉︎ Sun01:51 – 02:54
- 9♀︎ Venus02:54 – 03:58
- 10☿︎ Mercury03:58 – 05:01
- 11☽︎ Moon05:01 – 06:04
- 12♄︎ Saturn06:04 – 07:08
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Wednesday, 4 March 2026, the Sun rises at 07:10 and sets at 18:28: the day lasts 11h 18m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:08, lasts 12h 40m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
Mercury, from 07:10 to 08:06: 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.