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 Thursday, 4 December 2025: day of Jupiter
- Sunrise
- 08:17
- Sunset
- 16:22
- Next sunrise
- 08:18
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Berlin).
Day
- 1♃︎ Jupiter08:17 – 08:58
- 2♂︎ Mars08:58 – 09:38
- 3☉︎ Sun09:38 – 10:18
- 4♀︎ Venus10:18 – 10:59
- 5☿︎ Mercury10:59 – 11:39
- 6☽︎ Moon11:39 – 12:20
- 7♄︎ Saturn12:20 – 13:00
- 8♃︎ Jupiter13:00 – 13:41
- 9♂︎ Mars13:41 – 14:21
- 10☉︎ Sun14:21 – 15:01
- 11♀︎ Venus15:01 – 15:42
- 12☿︎ Mercury15:42 – 16:22
Night
- 1☽︎ Moon16:22 – 17:42
- 2♄︎ Saturn17:42 – 19:02
- 3♃︎ Jupiter19:02 – 20:21
- 4♂︎ Mars20:21 – 21:41
- 5☉︎ Sun21:41 – 23:01
- 6♀︎ Venus23:01 – 00:20
- 7☿︎ Mercury00:20 – 01:40
- 8☽︎ Moon01:40 – 03:00
- 9♄︎ Saturn03:00 – 04:19
- 10♃︎ Jupiter04:19 – 05:39
- 11♂︎ Mars05:39 – 06:59
- 12☉︎ Sun06:59 – 08:18
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Thursday, 4 December 2025, the Sun rises at 08:17 and sets at 16:22: the day lasts 8h 05m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:18, lasts 15h 56m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Jupiter, from 08:17 to 08:58: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.