Planetary hours
in Nanterre.
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, 15 December 2026: day of Mars
- Sunrise
- 08:37
- Sunset
- 16:54
- Next sunrise
- 08:38
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1♂︎ Mars08:37 – 09:19
- 2☉︎ Sun09:19 – 10:00
- 3♀︎ Venus10:00 – 10:42
- 4☿︎ Mercury10:42 – 11:23
- 5☽︎ Moon11:23 – 12:04
- 6♄︎ Saturn12:04 – 12:46
- 7♃︎ Jupiter12:46 – 13:27
- 8♂︎ Mars13:27 – 14:08
- 9☉︎ Sun14:08 – 14:50
- 10♀︎ Venus14:50 – 15:31
- 11☿︎ Mercury15:31 – 16:13
- 12☽︎ Moon16:13 – 16:54
Night
- 1♄︎ Saturn16:54 – 18:13
- 2♃︎ Jupiter18:13 – 19:31
- 3♂︎ Mars19:31 – 20:50
- 4☉︎ Sun20:50 – 22:09
- 5♀︎ Venus22:09 – 23:27
- 6☿︎ Mercury23:27 – 00:46
- 7☽︎ Moon00:46 – 02:05
- 8♄︎ Saturn02:05 – 03:23
- 9♃︎ Jupiter03:23 – 04:42
- 10♂︎ Mars04:42 – 06:01
- 11☉︎ Sun06:01 – 07:20
- 12♀︎ Venus07:20 – 08:38
Other cities · France
Questions
How are the planetary hours calculated in Nanterre?
On Tuesday, 15 December 2026, the Sun rises at 08:37 and sets at 16:54: the day lasts 8h 16m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:38, lasts 15h 44m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Mars, from 08:37 to 09:19: 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.