Planetary hours
in Brussels.
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 Thursday, 4 September 2025: day of Jupiter
- Sunrise
- 07:01
- Sunset
- 20:20
- Next sunrise
- 07:02
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Europe/Brussels).
Day
- 1♃︎ Jupiter07:01 – 08:07
- 2♂︎ Mars08:07 – 09:14
- 3☉︎ Sun09:14 – 10:21
- 4♀︎ Venus10:21 – 11:27
- 5☿︎ Mercury11:27 – 12:34
- 6☽︎ Moon12:34 – 13:41
- 7♄︎ Saturn13:41 – 14:47
- 8♃︎ Jupiter14:47 – 15:54
- 9♂︎ Mars15:54 – 17:00
- 10☉︎ Sun17:00 – 18:07
- 11♀︎ Venus18:07 – 19:14
- 12☿︎ Mercury19:14 – 20:20
Night
- 1☽︎ Moon20:20 – 21:14
- 2♄︎ Saturn21:14 – 22:07
- 3♃︎ Jupiter22:07 – 23:01
- 4♂︎ Mars23:01 – 23:54
- 5☉︎ Sun23:54 – 00:48
- 6♀︎ Venus00:48 – 01:41
- 7☿︎ Mercury01:41 – 02:35
- 8☽︎ Moon02:35 – 03:28
- 9♄︎ Saturn03:28 – 04:22
- 10♃︎ Jupiter04:22 – 05:15
- 11♂︎ Mars05:15 – 06:09
- 12☉︎ Sun06:09 – 07:02
Other cities · Belgium
Questions
How are the planetary hours calculated in Brussels?
On Thursday, 4 September 2025, the Sun rises at 07:01 and sets at 20:20: the day lasts 13h 20m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 07:02, lasts 10h 42m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Jupiter, from 07:01 to 08:07: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.