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 Tuesday, 29 September 2026: day of Mars
- Sunrise
- 07:32
- Sunset
- 19:21
- Next sunrise
- 07:33
A day hour lasts 59 min; a night hour, 1h 01m. Local time (Europe/Paris).
Day
- 1♂︎ Mars07:32 – 08:31
- 2☉︎ Sun08:31 – 09:30
- 3♀︎ Venus09:30 – 10:29
- 4☿︎ Mercury10:29 – 11:28
- 5☽︎ Moon11:28 – 12:27
- 6♄︎ Saturn12:27 – 13:27
- 7♃︎ Jupiter13:27 – 14:26
- 8♂︎ Mars14:26 – 15:25
- 9☉︎ Sun15:25 – 16:24
- 10♀︎ Venus16:24 – 17:23
- 11☿︎ Mercury17:23 – 18:22
- 12☽︎ Moon18:22 – 19:21
Night
- 1♄︎ Saturn19:21 – 20:22
- 2♃︎ Jupiter20:22 – 21:23
- 3♂︎ Mars21:23 – 22:24
- 4☉︎ Sun22:24 – 23:25
- 5♀︎ Venus23:25 – 00:26
- 6☿︎ Mercury00:26 – 01:27
- 7☽︎ Moon01:27 – 02:28
- 8♄︎ Saturn02:28 – 03:29
- 9♃︎ Jupiter03:29 – 04:30
- 10♂︎ Mars04:30 – 05:31
- 11☉︎ Sun05:31 – 06:32
- 12♀︎ Venus06:32 – 07:33
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Tuesday, 29 September 2026, the Sun rises at 07:32 and sets at 19:21: the day lasts 11h 49m, that is twelve day hours of 59 min. The night, until the next sunrise at 07:33, lasts 12h 12m: twelve night hours of 1h 01m.
Which planet rules the first hour that day?
Mars, from 07:32 to 08:31: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.