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, 18 July 2026: day of Saturn
- Sunrise
- 05:48
- Sunset
- 21:46
- Next sunrise
- 05:49
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/Brussels).
Day
- 1♄︎ Saturn05:48 – 07:07
- 2♃︎ Jupiter07:07 – 08:27
- 3♂︎ Mars08:27 – 09:47
- 4☉︎ Sun09:47 – 11:07
- 5♀︎ Venus11:07 – 12:27
- 6☿︎ Mercury12:27 – 13:47
- 7☽︎ Moon13:47 – 15:06
- 8♄︎ Saturn15:06 – 16:26
- 9♃︎ Jupiter16:26 – 17:46
- 10♂︎ Mars17:46 – 19:06
- 11☉︎ Sun19:06 – 20:26
- 12♀︎ Venus20:26 – 21:46
Night
- 1☿︎ Mercury21:46 – 22:26
- 2☽︎ Moon22:26 – 23:06
- 3♄︎ Saturn23:06 – 23:46
- 4♃︎ Jupiter23:46 – 00:27
- 5♂︎ Mars00:27 – 01:07
- 6☉︎ Sun01:07 – 01:47
- 7♀︎ Venus01:47 – 02:27
- 8☿︎ Mercury02:27 – 03:08
- 9☽︎ Moon03:08 – 03:48
- 10♄︎ Saturn03:48 – 04:28
- 11♃︎ Jupiter04:28 – 05:09
- 12♂︎ Mars05:09 – 05:49
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Saturday, 18 July 2026, the Sun rises at 05:48 and sets at 21:46: the day lasts 15h 58m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 05:49, lasts 8h 03m: twelve night hours of 40 min.
Which planet rules the first hour that day?
Saturn, from 05:48 to 07:07: 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.