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, 17 October 2026: day of Saturn
- Sunrise
- 08:07
- Sunset
- 18:44
- Next sunrise
- 08:09
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/Brussels).
Day
- 1♄︎ Saturn08:07 – 09:00
- 2♃︎ Jupiter09:00 – 09:53
- 3♂︎ Mars09:53 – 10:46
- 4☉︎ Sun10:46 – 11:39
- 5♀︎ Venus11:39 – 12:33
- 6☿︎ Mercury12:33 – 13:26
- 7☽︎ Moon13:26 – 14:19
- 8♄︎ Saturn14:19 – 15:12
- 9♃︎ Jupiter15:12 – 16:05
- 10♂︎ Mars16:05 – 16:58
- 11☉︎ Sun16:58 – 17:51
- 12♀︎ Venus17:51 – 18:44
Night
- 1☿︎ Mercury18:44 – 19:51
- 2☽︎ Moon19:51 – 20:58
- 3♄︎ Saturn20:58 – 22:05
- 4♃︎ Jupiter22:05 – 23:12
- 5♂︎ Mars23:12 – 00:19
- 6☉︎ Sun00:19 – 01:26
- 7♀︎ Venus01:26 – 02:33
- 8☿︎ Mercury02:33 – 03:41
- 9☽︎ Moon03:41 – 04:48
- 10♄︎ Saturn04:48 – 05:55
- 11♃︎ Jupiter05:55 – 07:02
- 12♂︎ Mars07:02 – 08:09
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Saturday, 17 October 2026, the Sun rises at 08:07 and sets at 18:44: the day lasts 10h 37m, that is twelve day hours of 53 min. The night, until the next sunrise at 08:09, lasts 13h 24m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Saturn, from 08:07 to 09:00: 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.