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, 16 December 2026: day of Mercury
- Sunrise
- 08:30
- Sunset
- 16:21
- Next sunrise
- 08:30
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/Berlin).
Day
- 1☿︎ Mercury08:30 – 09:09
- 2☽︎ Moon09:09 – 09:48
- 3♄︎ Saturn09:48 – 10:27
- 4♃︎ Jupiter10:27 – 11:07
- 5♂︎ Mars11:07 – 11:46
- 6☉︎ Sun11:46 – 12:25
- 7♀︎ Venus12:25 – 13:04
- 8☿︎ Mercury13:04 – 13:44
- 9☽︎ Moon13:44 – 14:23
- 10♄︎ Saturn14:23 – 15:02
- 11♃︎ Jupiter15:02 – 15:42
- 12♂︎ Mars15:42 – 16:21
Night
- 1☉︎ Sun16:21 – 17:42
- 2♀︎ Venus17:42 – 19:02
- 3☿︎ Mercury19:02 – 20:23
- 4☽︎ Moon20:23 – 21:44
- 5♄︎ Saturn21:44 – 23:05
- 6♃︎ Jupiter23:05 – 00:26
- 7♂︎ Mars00:26 – 01:46
- 8☉︎ Sun01:46 – 03:07
- 9♀︎ Venus03:07 – 04:28
- 10☿︎ Mercury04:28 – 05:49
- 11☽︎ Moon05:49 – 07:09
- 12♄︎ Saturn07:09 – 08:30
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Wednesday, 16 December 2026, the Sun rises at 08:30 and sets at 16:21: the day lasts 7h 51m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:30, lasts 16h 10m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mercury, from 08:30 to 09:09: 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.