Planetary hours
in Mons.
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 Monday, 8 December 2025: day of the Moon
- Sunrise
- 08:31
- Sunset
- 16:40
- Next sunrise
- 08:32
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/Brussels).
Day
- 1☽︎ Moon08:31 – 09:12
- 2♄︎ Saturn09:12 – 09:53
- 3♃︎ Jupiter09:53 – 10:33
- 4♂︎ Mars10:33 – 11:14
- 5☉︎ Sun11:14 – 11:55
- 6♀︎ Venus11:55 – 12:36
- 7☿︎ Mercury12:36 – 13:16
- 8☽︎ Moon13:16 – 13:57
- 9♄︎ Saturn13:57 – 14:38
- 10♃︎ Jupiter14:38 – 15:19
- 11♂︎ Mars15:19 – 15:59
- 12☉︎ Sun15:59 – 16:40
Night
- 1♀︎ Venus16:40 – 17:59
- 2☿︎ Mercury17:59 – 19:19
- 3☽︎ Moon19:19 – 20:38
- 4♄︎ Saturn20:38 – 21:57
- 5♃︎ Jupiter21:57 – 23:17
- 6♂︎ Mars23:17 – 00:36
- 7☉︎ Sun00:36 – 01:55
- 8♀︎ Venus01:55 – 03:15
- 9☿︎ Mercury03:15 – 04:34
- 10☽︎ Moon04:34 – 05:53
- 11♄︎ Saturn05:53 – 07:13
- 12♃︎ Jupiter07:13 – 08:32
Other cities · Belgium
Questions
How are the planetary hours calculated in Mons?
On Monday, 8 December 2025, the Sun rises at 08:31 and sets at 16:40: the day lasts 8h 09m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:32, lasts 15h 52m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
The Moon, from 08:31 to 09:12: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.