Planetary hours
in Katowice.
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, 17 December 2025: day of Mercury
- Sunrise
- 07:38
- Sunset
- 15:41
- Next sunrise
- 07:39
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Warsaw).
Day
- 1☿︎ Mercury07:38 – 08:18
- 2☽︎ Moon08:18 – 08:59
- 3♄︎ Saturn08:59 – 09:39
- 4♃︎ Jupiter09:39 – 10:19
- 5♂︎ Mars10:19 – 10:59
- 6☉︎ Sun10:59 – 11:40
- 7♀︎ Venus11:40 – 12:20
- 8☿︎ Mercury12:20 – 13:00
- 9☽︎ Moon13:00 – 13:40
- 10♄︎ Saturn13:40 – 14:21
- 11♃︎ Jupiter14:21 – 15:01
- 12♂︎ Mars15:01 – 15:41
Night
- 1☉︎ Sun15:41 – 17:01
- 2♀︎ Venus17:01 – 18:21
- 3☿︎ Mercury18:21 – 19:40
- 4☽︎ Moon19:40 – 21:00
- 5♄︎ Saturn21:00 – 22:20
- 6♃︎ Jupiter22:20 – 23:40
- 7♂︎ Mars23:40 – 01:00
- 8☉︎ Sun01:00 – 02:20
- 9♀︎ Venus02:20 – 03:39
- 10☿︎ Mercury03:39 – 04:59
- 11☽︎ Moon04:59 – 06:19
- 12♄︎ Saturn06:19 – 07:39
Other cities · Poland
Questions
How are the planetary hours calculated in Katowice?
On Wednesday, 17 December 2025, the Sun rises at 07:38 and sets at 15:41: the day lasts 8h 03m, that is twelve day hours of 40 min. The night, until the next sunrise at 07:39, lasts 15h 58m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Mercury, from 07:38 to 08:18: 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.