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 Saturday, 6 December 2025: day of Saturn
- Sunrise
- 08:20
- Sunset
- 16:22
- Next sunrise
- 08:21
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Berlin).
Day
- 1♄︎ Saturn08:20 – 09:00
- 2♃︎ Jupiter09:00 – 09:40
- 3♂︎ Mars09:40 – 10:20
- 4☉︎ Sun10:20 – 11:00
- 5♀︎ Venus11:00 – 11:40
- 6☿︎ Mercury11:40 – 12:21
- 7☽︎ Moon12:21 – 13:01
- 8♄︎ Saturn13:01 – 13:41
- 9♃︎ Jupiter13:41 – 14:21
- 10♂︎ Mars14:21 – 15:01
- 11☉︎ Sun15:01 – 15:41
- 12♀︎ Venus15:41 – 16:22
Night
- 1☿︎ Mercury16:22 – 17:41
- 2☽︎ Moon17:41 – 19:01
- 3♄︎ Saturn19:01 – 20:21
- 4♃︎ Jupiter20:21 – 21:41
- 5♂︎ Mars21:41 – 23:01
- 6☉︎ Sun23:01 – 00:21
- 7♀︎ Venus00:21 – 01:41
- 8☿︎ Mercury01:41 – 03:01
- 9☽︎ Moon03:01 – 04:21
- 10♄︎ Saturn04:21 – 05:41
- 11♃︎ Jupiter05:41 – 07:01
- 12♂︎ Mars07:01 – 08:21
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Saturday, 6 December 2025, the Sun rises at 08:20 and sets at 16:22: the day lasts 8h 02m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:21, lasts 15h 59m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Saturn, from 08:20 to 09:00: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.