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, 27 May 2026: day of Mercury
- Sunrise
- 05:37
- Sunset
- 21:40
- Next sunrise
- 05:36
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/Brussels).
Day
- 1☿︎ Mercury05:37 – 06:57
- 2☽︎ Moon06:57 – 08:17
- 3♄︎ Saturn08:17 – 09:38
- 4♃︎ Jupiter09:38 – 10:58
- 5♂︎ Mars10:58 – 12:18
- 6☉︎ Sun12:18 – 13:38
- 7♀︎ Venus13:38 – 14:58
- 8☿︎ Mercury14:58 – 16:19
- 9☽︎ Moon16:19 – 17:39
- 10♄︎ Saturn17:39 – 18:59
- 11♃︎ Jupiter18:59 – 20:19
- 12♂︎ Mars20:19 – 21:40
Night
- 1☉︎ Sun21:40 – 22:19
- 2♀︎ Venus22:19 – 22:59
- 3☿︎ Mercury22:59 – 23:39
- 4☽︎ Moon23:39 – 00:18
- 5♄︎ Saturn00:18 – 00:58
- 6♃︎ Jupiter00:58 – 01:38
- 7♂︎ Mars01:38 – 02:17
- 8☉︎ Sun02:17 – 02:57
- 9♀︎ Venus02:57 – 03:37
- 10☿︎ Mercury03:37 – 04:16
- 11☽︎ Moon04:16 – 04:56
- 12♄︎ Saturn04:56 – 05:36
Other cities · Belgium
Questions
How are the planetary hours calculated in Leuven?
On Wednesday, 27 May 2026, the Sun rises at 05:37 and sets at 21:40: the day lasts 16h 03m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 05:36, lasts 7h 56m: twelve night hours of 40 min.
Which planet rules the first hour that day?
Mercury, from 05:37 to 06:57: 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.