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 Thursday, 7 August 2025: day of Jupiter
- Sunrise
- 06:16
- Sunset
- 21:16
- Next sunrise
- 06:17
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Brussels).
Day
- 1♃︎ Jupiter06:16 – 07:31
- 2♂︎ Mars07:31 – 08:46
- 3☉︎ Sun08:46 – 10:01
- 4♀︎ Venus10:01 – 11:16
- 5☿︎ Mercury11:16 – 12:31
- 6☽︎ Moon12:31 – 13:46
- 7♄︎ Saturn13:46 – 15:01
- 8♃︎ Jupiter15:01 – 16:16
- 9♂︎ Mars16:16 – 17:31
- 10☉︎ Sun17:31 – 18:46
- 11♀︎ Venus18:46 – 20:01
- 12☿︎ Mercury20:01 – 21:16
Night
- 1☽︎ Moon21:16 – 22:01
- 2♄︎ Saturn22:01 – 22:46
- 3♃︎ Jupiter22:46 – 23:31
- 4♂︎ Mars23:31 – 00:16
- 5☉︎ Sun00:16 – 01:02
- 6♀︎ Venus01:02 – 01:47
- 7☿︎ Mercury01:47 – 02:32
- 8☽︎ Moon02:32 – 03:17
- 9♄︎ Saturn03:17 – 04:02
- 10♃︎ Jupiter04:02 – 04:47
- 11♂︎ Mars04:47 – 05:32
- 12☉︎ Sun05:32 – 06:17
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Thursday, 7 August 2025, the Sun rises at 06:16 and sets at 21:16: the day lasts 15h 00m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:17, lasts 9h 02m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Jupiter, from 06:16 to 07:31: 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.