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 Tuesday, 15 September 2026: day of Mars
- Sunrise
- 07:16
- Sunset
- 19:55
- Next sunrise
- 07:17
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Europe/Brussels).
Day
- 1♂︎ Mars07:16 – 08:19
- 2☉︎ Sun08:19 – 09:22
- 3♀︎ Venus09:22 – 10:26
- 4☿︎ Mercury10:26 – 11:29
- 5☽︎ Moon11:29 – 12:32
- 6♄︎ Saturn12:32 – 13:35
- 7♃︎ Jupiter13:35 – 14:39
- 8♂︎ Mars14:39 – 15:42
- 9☉︎ Sun15:42 – 16:45
- 10♀︎ Venus16:45 – 17:48
- 11☿︎ Mercury17:48 – 18:52
- 12☽︎ Moon18:52 – 19:55
Night
- 1♄︎ Saturn19:55 – 20:52
- 2♃︎ Jupiter20:52 – 21:49
- 3♂︎ Mars21:49 – 22:46
- 4☉︎ Sun22:46 – 23:42
- 5♀︎ Venus23:42 – 00:39
- 6☿︎ Mercury00:39 – 01:36
- 7☽︎ Moon01:36 – 02:33
- 8♄︎ Saturn02:33 – 03:30
- 9♃︎ Jupiter03:30 – 04:27
- 10♂︎ Mars04:27 – 05:24
- 11☉︎ Sun05:24 – 06:21
- 12♀︎ Venus06:21 – 07:17
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Tuesday, 15 September 2026, the Sun rises at 07:16 and sets at 19:55: the day lasts 12h 39m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 07:17, lasts 11h 22m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mars, from 07:16 to 08:19: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.