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 Wednesday, 9 December 2026: day of Mercury
- Sunrise
- 08:23
- Sunset
- 16:21
- Next sunrise
- 08:24
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Berlin).
Day
- 1☿︎ Mercury08:23 – 09:03
- 2☽︎ Moon09:03 – 09:43
- 3♄︎ Saturn09:43 – 10:22
- 4♃︎ Jupiter10:22 – 11:02
- 5♂︎ Mars11:02 – 11:42
- 6☉︎ Sun11:42 – 12:22
- 7♀︎ Venus12:22 – 13:02
- 8☿︎ Mercury13:02 – 13:41
- 9☽︎ Moon13:41 – 14:21
- 10♄︎ Saturn14:21 – 15:01
- 11♃︎ Jupiter15:01 – 15:41
- 12♂︎ Mars15:41 – 16:21
Night
- 1☉︎ Sun16:21 – 17:41
- 2♀︎ Venus17:41 – 19:01
- 3☿︎ Mercury19:01 – 20:22
- 4☽︎ Moon20:22 – 21:42
- 5♄︎ Saturn21:42 – 23:02
- 6♃︎ Jupiter23:02 – 00:22
- 7♂︎ Mars00:22 – 01:43
- 8☉︎ Sun01:43 – 03:03
- 9♀︎ Venus03:03 – 04:23
- 10☿︎ Mercury04:23 – 05:43
- 11☽︎ Moon05:43 – 07:04
- 12♄︎ Saturn07:04 – 08:24
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Wednesday, 9 December 2026, the Sun rises at 08:23 and sets at 16:21: the day lasts 7h 58m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:24, lasts 16h 03m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Mercury, from 08:23 to 09:03: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.