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 Friday, 23 January 2026: day of Venus
- Sunrise
- 08:29
- Sunset
- 17:17
- Next sunrise
- 08:28
A day hour lasts 44 min; a night hour, 1h 16m. Local time (Europe/Brussels).
Day
- 1♀︎ Venus08:29 – 09:13
- 2☿︎ Mercury09:13 – 09:57
- 3☽︎ Moon09:57 – 10:41
- 4♄︎ Saturn10:41 – 11:25
- 5♃︎ Jupiter11:25 – 12:09
- 6♂︎ Mars12:09 – 12:53
- 7☉︎ Sun12:53 – 13:37
- 8♀︎ Venus13:37 – 14:21
- 9☿︎ Mercury14:21 – 15:05
- 10☽︎ Moon15:05 – 15:49
- 11♄︎ Saturn15:49 – 16:33
- 12♃︎ Jupiter16:33 – 17:17
Night
- 1♂︎ Mars17:17 – 18:32
- 2☉︎ Sun18:32 – 19:48
- 3♀︎ Venus19:48 – 21:04
- 4☿︎ Mercury21:04 – 22:20
- 5☽︎ Moon22:20 – 23:36
- 6♄︎ Saturn23:36 – 00:52
- 7♃︎ Jupiter00:52 – 02:08
- 8♂︎ Mars02:08 – 03:24
- 9☉︎ Sun03:24 – 04:40
- 10♀︎ Venus04:40 – 05:56
- 11☿︎ Mercury05:56 – 07:12
- 12☽︎ Moon07:12 – 08:28
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Friday, 23 January 2026, the Sun rises at 08:29 and sets at 17:17: the day lasts 8h 47m, that is twelve day hours of 44 min. The night, until the next sunrise at 08:28, lasts 15h 11m: twelve night hours of 1h 16m.
Which planet rules the first hour that day?
Venus, from 08:29 to 09:13: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.