Planetary hours
in Gent.
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, 23 December 2025: day of Mars
- Sunrise
- 08:47
- Sunset
- 16:41
- Next sunrise
- 08:47
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Brussels).
Day
- 1♂︎ Mars08:47 – 09:26
- 2☉︎ Sun09:26 – 10:06
- 3♀︎ Venus10:06 – 10:45
- 4☿︎ Mercury10:45 – 11:25
- 5☽︎ Moon11:25 – 12:04
- 6♄︎ Saturn12:04 – 12:44
- 7♃︎ Jupiter12:44 – 13:23
- 8♂︎ Mars13:23 – 14:03
- 9☉︎ Sun14:03 – 14:42
- 10♀︎ Venus14:42 – 15:22
- 11☿︎ Mercury15:22 – 16:02
- 12☽︎ Moon16:02 – 16:41
Night
- 1♄︎ Saturn16:41 – 18:02
- 2♃︎ Jupiter18:02 – 19:22
- 3♂︎ Mars19:22 – 20:43
- 4☉︎ Sun20:43 – 22:03
- 5♀︎ Venus22:03 – 23:24
- 6☿︎ Mercury23:24 – 00:44
- 7☽︎ Moon00:44 – 02:04
- 8♄︎ Saturn02:04 – 03:25
- 9♃︎ Jupiter03:25 – 04:45
- 10♂︎ Mars04:45 – 06:06
- 11☉︎ Sun06:06 – 07:26
- 12♀︎ Venus07:26 – 08:47
Other cities · Belgium
Questions
How are the planetary hours calculated in Gent?
On Tuesday, 23 December 2025, the Sun rises at 08:47 and sets at 16:41: the day lasts 7h 54m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:47, lasts 16h 06m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Mars, from 08:47 to 09:26: 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.