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 Wednesday, 21 October 2026: day of Mercury
- Sunrise
- 08:14
- Sunset
- 18:36
- Next sunrise
- 08:15
A day hour lasts 52 min; a night hour, 1h 08m. Local time (Europe/Brussels).
Day
- 1☿︎ Mercury08:14 – 09:06
- 2☽︎ Moon09:06 – 09:57
- 3♄︎ Saturn09:57 – 10:49
- 4♃︎ Jupiter10:49 – 11:41
- 5♂︎ Mars11:41 – 12:33
- 6☉︎ Sun12:33 – 13:25
- 7♀︎ Venus13:25 – 14:17
- 8☿︎ Mercury14:17 – 15:09
- 9☽︎ Moon15:09 – 16:01
- 10♄︎ Saturn16:01 – 16:52
- 11♃︎ Jupiter16:52 – 17:44
- 12♂︎ Mars17:44 – 18:36
Night
- 1☉︎ Sun18:36 – 19:44
- 2♀︎ Venus19:44 – 20:53
- 3☿︎ Mercury20:53 – 22:01
- 4☽︎ Moon22:01 – 23:09
- 5♄︎ Saturn23:09 – 00:18
- 6♃︎ Jupiter00:18 – 01:26
- 7♂︎ Mars01:26 – 02:34
- 8☉︎ Sun02:34 – 03:42
- 9♀︎ Venus03:42 – 04:51
- 10☿︎ Mercury04:51 – 05:59
- 11☽︎ Moon05:59 – 07:07
- 12♄︎ Saturn07:07 – 08:15
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Wednesday, 21 October 2026, the Sun rises at 08:14 and sets at 18:36: the day lasts 10h 23m, that is twelve day hours of 52 min. The night, until the next sunrise at 08:15, lasts 13h 39m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mercury, from 08:14 to 09:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.