Planetary hours
in Leuven.
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 Saturday, 25 October 2025: day of Saturn
- Sunrise
- 08:21
- Sunset
- 18:28
- Next sunrise
- 07:23
A day hour lasts 51 min; a night hour, 1h 10m. Local time (Europe/Brussels).
Day
- 1♄︎ Saturn08:21 – 09:11
- 2♃︎ Jupiter09:11 – 10:02
- 3♂︎ Mars10:02 – 10:53
- 4☉︎ Sun10:53 – 11:43
- 5♀︎ Venus11:43 – 12:34
- 6☿︎ Mercury12:34 – 13:24
- 7☽︎ Moon13:24 – 14:15
- 8♄︎ Saturn14:15 – 15:06
- 9♃︎ Jupiter15:06 – 15:56
- 10♂︎ Mars15:56 – 16:47
- 11☉︎ Sun16:47 – 17:37
- 12♀︎ Venus17:37 – 18:28
Night
- 1☿︎ Mercury18:28 – 19:37
- 2☽︎ Moon19:37 – 20:47
- 3♄︎ Saturn20:47 – 21:57
- 4♃︎ Jupiter21:57 – 23:06
- 5♂︎ Mars23:06 – 00:16
- 6☉︎ Sun00:16 – 01:25
- 7♀︎ Venus01:25 – 02:35
- 8☿︎ Mercury02:35 – 02:44
- 9☽︎ Moon02:44 – 03:54
- 10♄︎ Saturn03:54 – 05:03
- 11♃︎ Jupiter05:03 – 06:13
- 12♂︎ Mars06:13 – 07:23
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Saturday, 25 October 2025, the Sun rises at 08:21 and sets at 18:28: the day lasts 10h 07m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:23, lasts 13h 55m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
Saturn, from 08:21 to 09:11: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.