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, 20 September 2025: day of Saturn
- Sunrise
- 07:13
- Sunset
- 19:32
- Next sunrise
- 07:14
A day hour lasts 1h 02m; a night hour, 59 min. Local time (Europe/Berlin).
Day
- 1♄︎ Saturn07:13 – 08:14
- 2♃︎ Jupiter08:14 – 09:16
- 3♂︎ Mars09:16 – 10:18
- 4☉︎ Sun10:18 – 11:19
- 5♀︎ Venus11:19 – 12:21
- 6☿︎ Mercury12:21 – 13:22
- 7☽︎ Moon13:22 – 14:24
- 8♄︎ Saturn14:24 – 15:26
- 9♃︎ Jupiter15:26 – 16:27
- 10♂︎ Mars16:27 – 17:29
- 11☉︎ Sun17:29 – 18:31
- 12♀︎ Venus18:31 – 19:32
Night
- 1☿︎ Mercury19:32 – 20:31
- 2☽︎ Moon20:31 – 21:29
- 3♄︎ Saturn21:29 – 22:28
- 4♃︎ Jupiter22:28 – 23:26
- 5♂︎ Mars23:26 – 00:25
- 6☉︎ Sun00:25 – 01:23
- 7♀︎ Venus01:23 – 02:22
- 8☿︎ Mercury02:22 – 03:20
- 9☽︎ Moon03:20 – 04:19
- 10♄︎ Saturn04:19 – 05:17
- 11♃︎ Jupiter05:17 – 06:16
- 12♂︎ Mars06:16 – 07:14
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Saturday, 20 September 2025, the Sun rises at 07:13 and sets at 19:32: the day lasts 12h 20m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 07:14, lasts 11h 42m: twelve night hours of 59 min.
Which planet rules the first hour that day?
Saturn, from 07:13 to 08:14: 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.