Planetary hours
in Dortmund.
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 Monday, 8 December 2025: day of the Moon
- Sunrise
- 08:22
- Sunset
- 16:21
- Next sunrise
- 08:23
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Berlin).
Day
- 1☽︎ Moon08:22 – 09:02
- 2♄︎ Saturn09:02 – 09:42
- 3♃︎ Jupiter09:42 – 10:22
- 4♂︎ Mars10:22 – 11:02
- 5☉︎ Sun11:02 – 11:42
- 6♀︎ Venus11:42 – 12:21
- 7☿︎ Mercury12:21 – 13:01
- 8☽︎ Moon13:01 – 13:41
- 9♄︎ Saturn13:41 – 14:21
- 10♃︎ Jupiter14:21 – 15:01
- 11♂︎ Mars15:01 – 15:41
- 12☉︎ Sun15:41 – 16:21
Night
- 1♀︎ Venus16:21 – 17:41
- 2☿︎ Mercury17:41 – 19:01
- 3☽︎ Moon19:01 – 20:21
- 4♄︎ Saturn20:21 – 21:42
- 5♃︎ Jupiter21:42 – 23:02
- 6♂︎ Mars23:02 – 00:22
- 7☉︎ Sun00:22 – 01:42
- 8♀︎ Venus01:42 – 03:02
- 9☿︎ Mercury03:02 – 04:23
- 10☽︎ Moon04:23 – 05:43
- 11♄︎ Saturn05:43 – 07:03
- 12♃︎ Jupiter07:03 – 08:23
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Monday, 8 December 2025, the Sun rises at 08:22 and sets at 16:21: the day lasts 7h 59m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:23, lasts 16h 02m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
The Moon, from 08:22 to 09:02: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.