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, 23 August 2025: day of Saturn
- Sunrise
- 06:28
- Sunset
- 20:35
- Next sunrise
- 06:30
A day hour lasts 1h 11m; a night hour, 50 min. Local time (Europe/Berlin).
Day
- 1♄︎ Saturn06:28 – 07:39
- 2♃︎ Jupiter07:39 – 08:49
- 3♂︎ Mars08:49 – 10:00
- 4☉︎ Sun10:00 – 11:10
- 5♀︎ Venus11:10 – 12:21
- 6☿︎ Mercury12:21 – 13:32
- 7☽︎ Moon13:32 – 14:42
- 8♄︎ Saturn14:42 – 15:53
- 9♃︎ Jupiter15:53 – 17:03
- 10♂︎ Mars17:03 – 18:14
- 11☉︎ Sun18:14 – 19:25
- 12♀︎ Venus19:25 – 20:35
Night
- 1☿︎ Mercury20:35 – 21:25
- 2☽︎ Moon21:25 – 22:14
- 3♄︎ Saturn22:14 – 23:04
- 4♃︎ Jupiter23:04 – 23:53
- 5♂︎ Mars23:53 – 00:43
- 6☉︎ Sun00:43 – 01:32
- 7♀︎ Venus01:32 – 02:22
- 8☿︎ Mercury02:22 – 03:12
- 9☽︎ Moon03:12 – 04:01
- 10♄︎ Saturn04:01 – 04:51
- 11♃︎ Jupiter04:51 – 05:40
- 12♂︎ Mars05:40 – 06:30
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Saturday, 23 August 2025, the Sun rises at 06:28 and sets at 20:35: the day lasts 14h 07m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 06:30, lasts 9h 54m: twelve night hours of 50 min.
Which planet rules the first hour that day?
Saturn, from 06:28 to 07:39: 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.