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 Saturday, 28 February 2026: day of Saturn
- Sunrise
- 07:17
- Sunset
- 18:22
- Next sunrise
- 07:15
A day hour lasts 55 min; a night hour, 1h 04m. Local time (Europe/Paris).
Day
- 1♄︎ Saturn07:17 – 08:12
- 2♃︎ Jupiter08:12 – 09:08
- 3♂︎ Mars09:08 – 10:03
- 4☉︎ Sun10:03 – 10:59
- 5♀︎ Venus10:59 – 11:54
- 6☿︎ Mercury11:54 – 12:50
- 7☽︎ Moon12:50 – 13:45
- 8♄︎ Saturn13:45 – 14:40
- 9♃︎ Jupiter14:40 – 15:36
- 10♂︎ Mars15:36 – 16:31
- 11☉︎ Sun16:31 – 17:27
- 12♀︎ Venus17:27 – 18:22
Night
- 1☿︎ Mercury18:22 – 19:27
- 2☽︎ Moon19:27 – 20:31
- 3♄︎ Saturn20:31 – 21:36
- 4♃︎ Jupiter21:36 – 22:40
- 5♂︎ Mars22:40 – 23:44
- 6☉︎ Sun23:44 – 00:49
- 7♀︎ Venus00:49 – 01:53
- 8☿︎ Mercury01:53 – 02:57
- 9☽︎ Moon02:57 – 04:02
- 10♄︎ Saturn04:02 – 05:06
- 11♃︎ Jupiter05:06 – 06:11
- 12♂︎ Mars06:11 – 07:15
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Saturday, 28 February 2026, the Sun rises at 07:17 and sets at 18:22: the day lasts 11h 06m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:15, lasts 12h 53m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Saturn, from 07:17 to 08:12: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.