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, 21 January 2027: day of Jupiter
- Sunrise
- 08:08
- Sunset
- 17:28
- Next sunrise
- 08:07
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter08:08 – 08:55
- 2♂︎ Mars08:55 – 09:41
- 3☉︎ Sun09:41 – 10:28
- 4♀︎ Venus10:28 – 11:15
- 5☿︎ Mercury11:15 – 12:01
- 6☽︎ Moon12:01 – 12:48
- 7♄︎ Saturn12:48 – 13:35
- 8♃︎ Jupiter13:35 – 14:21
- 9♂︎ Mars14:21 – 15:08
- 10☉︎ Sun15:08 – 15:55
- 11♀︎ Venus15:55 – 16:41
- 12☿︎ Mercury16:41 – 17:28
Night
- 1☽︎ Moon17:28 – 18:41
- 2♄︎ Saturn18:41 – 19:55
- 3♃︎ Jupiter19:55 – 21:08
- 4♂︎ Mars21:08 – 22:21
- 5☉︎ Sun22:21 – 23:34
- 6♀︎ Venus23:34 – 00:48
- 7☿︎ Mercury00:48 – 02:01
- 8☽︎ Moon02:01 – 03:14
- 9♄︎ Saturn03:14 – 04:27
- 10♃︎ Jupiter04:27 – 05:41
- 11♂︎ Mars05:41 – 06:54
- 12☉︎ Sun06:54 – 08:07
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Thursday, 21 January 2027, the Sun rises at 08:08 and sets at 17:28: the day lasts 9h 20m, that is twelve day hours of 47 min. The night, until the next sunrise at 08:07, lasts 14h 39m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Jupiter, from 08:08 to 08:55: 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.