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, 13 October 2026: day of Mars
- Sunrise
- 07:50
- Sunset
- 18:55
- Next sunrise
- 07:51
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Europe/Paris).
Day
- 1♂︎ Mars07:50 – 08:45
- 2☉︎ Sun08:45 – 09:41
- 3♀︎ Venus09:41 – 10:36
- 4☿︎ Mercury10:36 – 11:32
- 5☽︎ Moon11:32 – 12:27
- 6♄︎ Saturn12:27 – 13:23
- 7♃︎ Jupiter13:23 – 14:18
- 8♂︎ Mars14:18 – 15:13
- 9☉︎ Sun15:13 – 16:09
- 10♀︎ Venus16:09 – 17:04
- 11☿︎ Mercury17:04 – 18:00
- 12☽︎ Moon18:00 – 18:55
Night
- 1♄︎ Saturn18:55 – 20:00
- 2♃︎ Jupiter20:00 – 21:05
- 3♂︎ Mars21:05 – 22:09
- 4☉︎ Sun22:09 – 23:14
- 5♀︎ Venus23:14 – 00:19
- 6☿︎ Mercury00:19 – 01:23
- 7☽︎ Moon01:23 – 02:28
- 8♄︎ Saturn02:28 – 03:32
- 9♃︎ Jupiter03:32 – 04:37
- 10♂︎ Mars04:37 – 05:42
- 11☉︎ Sun05:42 – 06:46
- 12♀︎ Venus06:46 – 07:51
Other cities · France
Questions
How are the planetary hours calculated in Grenoble?
On Tuesday, 13 October 2026, the Sun rises at 07:50 and sets at 18:55: the day lasts 11h 06m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:51, lasts 12h 56m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Mars, from 07:50 to 08:45: 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.