Planetary hours
in Strasbourg.
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 Sunday, 21 December 2025: day of the Sun
- Sunrise
- 08:18
- Sunset
- 16:35
- Next sunrise
- 08:19
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Paris).
Day
- 1☉︎ Sun08:18 – 08:59
- 2♀︎ Venus08:59 – 09:41
- 3☿︎ Mercury09:41 – 10:22
- 4☽︎ Moon10:22 – 11:04
- 5♄︎ Saturn11:04 – 11:45
- 6♃︎ Jupiter11:45 – 12:27
- 7♂︎ Mars12:27 – 13:08
- 8☉︎ Sun13:08 – 13:50
- 9♀︎ Venus13:50 – 14:31
- 10☿︎ Mercury14:31 – 15:12
- 11☽︎ Moon15:12 – 15:54
- 12♄︎ Saturn15:54 – 16:35
Night
- 1♃︎ Jupiter16:35 – 17:54
- 2♂︎ Mars17:54 – 19:13
- 3☉︎ Sun19:13 – 20:31
- 4♀︎ Venus20:31 – 21:50
- 5☿︎ Mercury21:50 – 23:08
- 6☽︎ Moon23:08 – 00:27
- 7♄︎ Saturn00:27 – 01:46
- 8♃︎ Jupiter01:46 – 03:04
- 9♂︎ Mars03:04 – 04:23
- 10☉︎ Sun04:23 – 05:41
- 11♀︎ Venus05:41 – 07:00
- 12☿︎ Mercury07:00 – 08:19
Other cities · France
Questions
How are the planetary hours calculated in Strasbourg?
On Sunday, 21 December 2025, the Sun rises at 08:18 and sets at 16:35: the day lasts 8h 17m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:19, lasts 15h 43m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
The Sun, from 08:18 to 08:59: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.