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 Monday, 21 September 2026: day of the Moon
- Sunrise
- 07:25
- Sunset
- 19:41
- Next sunrise
- 07:27
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Europe/Brussels).
Day
- 1☽︎ Moon07:25 – 08:27
- 2♄︎ Saturn08:27 – 09:28
- 3♃︎ Jupiter09:28 – 10:29
- 4♂︎ Mars10:29 – 11:31
- 5☉︎ Sun11:31 – 12:32
- 6♀︎ Venus12:32 – 13:33
- 7☿︎ Mercury13:33 – 14:35
- 8☽︎ Moon14:35 – 15:36
- 9♄︎ Saturn15:36 – 16:37
- 10♃︎ Jupiter16:37 – 17:39
- 11♂︎ Mars17:39 – 18:40
- 12☉︎ Sun18:40 – 19:41
Night
- 1♀︎ Venus19:41 – 20:40
- 2☿︎ Mercury20:40 – 21:39
- 3☽︎ Moon21:39 – 22:38
- 4♄︎ Saturn22:38 – 23:37
- 5♃︎ Jupiter23:37 – 00:35
- 6♂︎ Mars00:35 – 01:34
- 7☉︎ Sun01:34 – 02:33
- 8♀︎ Venus02:33 – 03:32
- 9☿︎ Mercury03:32 – 04:30
- 10☽︎ Moon04:30 – 05:29
- 11♄︎ Saturn05:29 – 06:28
- 12♃︎ Jupiter06:28 – 07:27
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Monday, 21 September 2026, the Sun rises at 07:25 and sets at 19:41: the day lasts 12h 16m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 07:27, lasts 11h 45m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Moon, from 07:25 to 08:27: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.