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, 4 June 2025: day of Mercury
- Sunrise
- 05:30
- Sunset
- 21:49
- Next sunrise
- 05:30
A day hour lasts 1h 22m; a night hour, 38 min. Local time (Europe/Brussels).
Day
- 1☿︎ Mercury05:30 – 06:52
- 2☽︎ Moon06:52 – 08:13
- 3♄︎ Saturn08:13 – 09:35
- 4♃︎ Jupiter09:35 – 10:56
- 5♂︎ Mars10:56 – 12:18
- 6☉︎ Sun12:18 – 13:39
- 7♀︎ Venus13:39 – 15:01
- 8☿︎ Mercury15:01 – 16:22
- 9☽︎ Moon16:22 – 17:44
- 10♄︎ Saturn17:44 – 19:05
- 11♃︎ Jupiter19:05 – 20:27
- 12♂︎ Mars20:27 – 21:49
Night
- 1☉︎ Sun21:49 – 22:27
- 2♀︎ Venus22:27 – 23:05
- 3☿︎ Mercury23:05 – 23:44
- 4☽︎ Moon23:44 – 00:22
- 5♄︎ Saturn00:22 – 01:01
- 6♃︎ Jupiter01:01 – 01:39
- 7♂︎ Mars01:39 – 02:17
- 8☉︎ Sun02:17 – 02:56
- 9♀︎ Venus02:56 – 03:34
- 10☿︎ Mercury03:34 – 04:13
- 11☽︎ Moon04:13 – 04:51
- 12♄︎ Saturn04:51 – 05:30
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Wednesday, 4 June 2025, the Sun rises at 05:30 and sets at 21:49: the day lasts 16h 18m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 05:30, lasts 7h 41m: twelve night hours of 38 min.
Which planet rules the first hour that day?
Mercury, from 05:30 to 06:52: 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.