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 Sunday, 16 August 2026: day of the Sun
- Sunrise
- 06:29
- Sunset
- 21:00
- Next sunrise
- 06:31
A day hour lasts 1h 13m; a night hour, 48 min. Local time (Europe/Brussels).
Day
- 1☉︎ Sun06:29 – 07:42
- 2♀︎ Venus07:42 – 08:54
- 3☿︎ Mercury08:54 – 10:07
- 4☽︎ Moon10:07 – 11:19
- 5♄︎ Saturn11:19 – 12:32
- 6♃︎ Jupiter12:32 – 13:44
- 7♂︎ Mars13:44 – 14:57
- 8☉︎ Sun14:57 – 16:09
- 9♀︎ Venus16:09 – 17:22
- 10☿︎ Mercury17:22 – 18:35
- 11☽︎ Moon18:35 – 19:47
- 12♄︎ Saturn19:47 – 21:00
Night
- 1♃︎ Jupiter21:00 – 21:47
- 2♂︎ Mars21:47 – 22:35
- 3☉︎ Sun22:35 – 23:22
- 4♀︎ Venus23:22 – 00:10
- 5☿︎ Mercury00:10 – 00:58
- 6☽︎ Moon00:58 – 01:45
- 7♄︎ Saturn01:45 – 02:33
- 8♃︎ Jupiter02:33 – 03:20
- 9♂︎ Mars03:20 – 04:08
- 10☉︎ Sun04:08 – 04:56
- 11♀︎ Venus04:56 – 05:43
- 12☿︎ Mercury05:43 – 06:31
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Sunday, 16 August 2026, the Sun rises at 06:29 and sets at 21:00: the day lasts 14h 30m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 06:31, lasts 9h 31m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Sun, from 06:29 to 07:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.