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, 27 September 2025: day of Saturn
- Sunrise
- 07:35
- Sunset
- 19:27
- Next sunrise
- 07:37
A day hour lasts 59 min; a night hour, 1h 01m. Local time (Europe/Brussels).
Day
- 1♄︎ Saturn07:35 – 08:34
- 2♃︎ Jupiter08:34 – 09:34
- 3♂︎ Mars09:34 – 10:33
- 4☉︎ Sun10:33 – 11:32
- 5♀︎ Venus11:32 – 12:32
- 6☿︎ Mercury12:32 – 13:31
- 7☽︎ Moon13:31 – 14:30
- 8♄︎ Saturn14:30 – 15:30
- 9♃︎ Jupiter15:30 – 16:29
- 10♂︎ Mars16:29 – 17:29
- 11☉︎ Sun17:29 – 18:28
- 12♀︎ Venus18:28 – 19:27
Night
- 1☿︎ Mercury19:27 – 20:28
- 2☽︎ Moon20:28 – 21:29
- 3♄︎ Saturn21:29 – 22:30
- 4♃︎ Jupiter22:30 – 23:30
- 5♂︎ Mars23:30 – 00:31
- 6☉︎ Sun00:31 – 01:32
- 7♀︎ Venus01:32 – 02:33
- 8☿︎ Mercury02:33 – 03:33
- 9☽︎ Moon03:33 – 04:34
- 10♄︎ Saturn04:34 – 05:35
- 11♃︎ Jupiter05:35 – 06:36
- 12♂︎ Mars06:36 – 07:37
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Saturday, 27 September 2025, the Sun rises at 07:35 and sets at 19:27: the day lasts 11h 52m, that is twelve day hours of 59 min. The night, until the next sunrise at 07:37, lasts 12h 09m: twelve night hours of 1h 01m.
Which planet rules the first hour that day?
Saturn, from 07:35 to 08:34: 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.