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, 16 August 2025: day of Saturn
- Sunrise
- 06:17
- Sunset
- 20:50
- Next sunrise
- 06:19
A day hour lasts 1h 13m; a night hour, 47 min. Local time (Europe/Berlin).
Day
- 1♄︎ Saturn06:17 – 07:30
- 2♃︎ Jupiter07:30 – 08:42
- 3♂︎ Mars08:42 – 09:55
- 4☉︎ Sun09:55 – 11:08
- 5♀︎ Venus11:08 – 12:21
- 6☿︎ Mercury12:21 – 13:33
- 7☽︎ Moon13:33 – 14:46
- 8♄︎ Saturn14:46 – 15:59
- 9♃︎ Jupiter15:59 – 17:12
- 10♂︎ Mars17:12 – 18:24
- 11☉︎ Sun18:24 – 19:37
- 12♀︎ Venus19:37 – 20:50
Night
- 1☿︎ Mercury20:50 – 21:37
- 2☽︎ Moon21:37 – 22:25
- 3♄︎ Saturn22:25 – 23:12
- 4♃︎ Jupiter23:12 – 23:59
- 5♂︎ Mars23:59 – 00:47
- 6☉︎ Sun00:47 – 01:34
- 7♀︎ Venus01:34 – 02:22
- 8☿︎ Mercury02:22 – 03:09
- 9☽︎ Moon03:09 – 03:56
- 10♄︎ Saturn03:56 – 04:44
- 11♃︎ Jupiter04:44 – 05:31
- 12♂︎ Mars05:31 – 06:19
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Saturday, 16 August 2025, the Sun rises at 06:17 and sets at 20:50: the day lasts 14h 33m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 06:19, lasts 9h 29m: twelve night hours of 47 min.
Which planet rules the first hour that day?
Saturn, from 06:17 to 07:30: 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.