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 Thursday, 18 June 2026: day of Jupiter
- Sunrise
- 05:49
- Sunset
- 21:27
- Next sunrise
- 05:49
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter05:49 – 07:07
- 2♂︎ Mars07:07 – 08:25
- 3☉︎ Sun08:25 – 09:43
- 4♀︎ Venus09:43 – 11:01
- 5☿︎ Mercury11:01 – 12:20
- 6☽︎ Moon12:20 – 13:38
- 7♄︎ Saturn13:38 – 14:56
- 8♃︎ Jupiter14:56 – 16:14
- 9♂︎ Mars16:14 – 17:32
- 10☉︎ Sun17:32 – 18:51
- 11♀︎ Venus18:51 – 20:09
- 12☿︎ Mercury20:09 – 21:27
Night
- 1☽︎ Moon21:27 – 22:09
- 2♄︎ Saturn22:09 – 22:51
- 3♃︎ Jupiter22:51 – 23:32
- 4♂︎ Mars23:32 – 00:14
- 5☉︎ Sun00:14 – 00:56
- 6♀︎ Venus00:56 – 01:38
- 7☿︎ Mercury01:38 – 02:20
- 8☽︎ Moon02:20 – 03:02
- 9♄︎ Saturn03:02 – 03:43
- 10♃︎ Jupiter03:43 – 04:25
- 11♂︎ Mars04:25 – 05:07
- 12☉︎ Sun05:07 – 05:49
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Thursday, 18 June 2026, the Sun rises at 05:49 and sets at 21:27: the day lasts 15h 38m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 05:49, lasts 8h 22m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Jupiter, from 05:49 to 07:07: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.