Planetary hours
in Brugge.
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 Wednesday, 17 December 2025: day of Mercury
- Sunrise
- 08:46
- Sunset
- 16:40
- Next sunrise
- 08:47
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/Brussels).
Day
- 1☿︎ Mercury08:46 – 09:25
- 2☽︎ Moon09:25 – 10:05
- 3♄︎ Saturn10:05 – 10:44
- 4♃︎ Jupiter10:44 – 11:24
- 5♂︎ Mars11:24 – 12:03
- 6☉︎ Sun12:03 – 12:43
- 7♀︎ Venus12:43 – 13:22
- 8☿︎ Mercury13:22 – 14:02
- 9☽︎ Moon14:02 – 14:41
- 10♄︎ Saturn14:41 – 15:21
- 11♃︎ Jupiter15:21 – 16:00
- 12♂︎ Mars16:00 – 16:40
Night
- 1☉︎ Sun16:40 – 18:00
- 2♀︎ Venus18:00 – 19:21
- 3☿︎ Mercury19:21 – 20:41
- 4☽︎ Moon20:41 – 22:02
- 5♄︎ Saturn22:02 – 23:23
- 6♃︎ Jupiter23:23 – 00:43
- 7♂︎ Mars00:43 – 02:04
- 8☉︎ Sun02:04 – 03:24
- 9♀︎ Venus03:24 – 04:45
- 10☿︎ Mercury04:45 – 06:05
- 11☽︎ Moon06:05 – 07:26
- 12♄︎ Saturn07:26 – 08:47
Other cities · Belgium
Questions
How are the planetary hours calculated in Brugge?
On Wednesday, 17 December 2025, the Sun rises at 08:46 and sets at 16:40: the day lasts 7h 54m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:47, lasts 16h 07m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mercury, from 08:46 to 09:25: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.