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, 30 September 2026: day of Mercury
- Sunrise
- 07:39
- Sunset
- 19:21
- Next sunrise
- 07:41
A day hour lasts 58 min; a night hour, 1h 02m. Local time (Europe/Brussels).
Day
- 1☿︎ Mercury07:39 – 08:38
- 2☽︎ Moon08:38 – 09:36
- 3♄︎ Saturn09:36 – 10:35
- 4♃︎ Jupiter10:35 – 11:33
- 5♂︎ Mars11:33 – 12:32
- 6☉︎ Sun12:32 – 13:30
- 7♀︎ Venus13:30 – 14:29
- 8☿︎ Mercury14:29 – 15:27
- 9☽︎ Moon15:27 – 16:26
- 10♄︎ Saturn16:26 – 17:24
- 11♃︎ Jupiter17:24 – 18:23
- 12♂︎ Mars18:23 – 19:21
Night
- 1☉︎ Sun19:21 – 20:23
- 2♀︎ Venus20:23 – 21:24
- 3☿︎ Mercury21:24 – 22:26
- 4☽︎ Moon22:26 – 23:28
- 5♄︎ Saturn23:28 – 00:29
- 6♃︎ Jupiter00:29 – 01:31
- 7♂︎ Mars01:31 – 02:33
- 8☉︎ Sun02:33 – 03:34
- 9♀︎ Venus03:34 – 04:36
- 10☿︎ Mercury04:36 – 05:38
- 11☽︎ Moon05:38 – 06:39
- 12♄︎ Saturn06:39 – 07:41
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Wednesday, 30 September 2026, the Sun rises at 07:39 and sets at 19:21: the day lasts 11h 42m, that is twelve day hours of 58 min. The night, until the next sunrise at 07:41, lasts 12h 20m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
Mercury, from 07:39 to 08:38: 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.