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, 6 August 2025: day of Mercury
- Sunrise
- 06:14
- Sunset
- 21:18
- Next sunrise
- 06:16
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Brussels).
Day
- 1☿︎ Mercury06:14 – 07:30
- 2☽︎ Moon07:30 – 08:45
- 3♄︎ Saturn08:45 – 10:00
- 4♃︎ Jupiter10:00 – 11:16
- 5♂︎ Mars11:16 – 12:31
- 6☉︎ Sun12:31 – 13:46
- 7♀︎ Venus13:46 – 15:01
- 8☿︎ Mercury15:01 – 16:17
- 9☽︎ Moon16:17 – 17:32
- 10♄︎ Saturn17:32 – 18:47
- 11♃︎ Jupiter18:47 – 20:02
- 12♂︎ Mars20:02 – 21:18
Night
- 1☉︎ Sun21:18 – 22:03
- 2♀︎ Venus22:03 – 22:47
- 3☿︎ Mercury22:47 – 23:32
- 4☽︎ Moon23:32 – 00:17
- 5♄︎ Saturn00:17 – 01:02
- 6♃︎ Jupiter01:02 – 01:47
- 7♂︎ Mars01:47 – 02:32
- 8☉︎ Sun02:32 – 03:17
- 9♀︎ Venus03:17 – 04:01
- 10☿︎ Mercury04:01 – 04:46
- 11☽︎ Moon04:46 – 05:31
- 12♄︎ Saturn05:31 – 06:16
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Wednesday, 6 August 2025, the Sun rises at 06:14 and sets at 21:18: the day lasts 15h 03m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 06:16, lasts 8h 58m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Mercury, from 06:14 to 07:30: 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.