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 Sunday, 13 December 2026: day of the Sun
- Sunrise
- 08:27
- Sunset
- 16:20
- Next sunrise
- 08:28
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/Berlin).
Day
- 1☉︎ Sun08:27 – 09:06
- 2♀︎ Venus09:06 – 09:46
- 3☿︎ Mercury09:46 – 10:25
- 4☽︎ Moon10:25 – 11:05
- 5♄︎ Saturn11:05 – 11:44
- 6♃︎ Jupiter11:44 – 12:24
- 7♂︎ Mars12:24 – 13:03
- 8☉︎ Sun13:03 – 13:43
- 9♀︎ Venus13:43 – 14:22
- 10☿︎ Mercury14:22 – 15:02
- 11☽︎ Moon15:02 – 15:41
- 12♄︎ Saturn15:41 – 16:20
Night
- 1♃︎ Jupiter16:20 – 17:41
- 2♂︎ Mars17:41 – 19:02
- 3☉︎ Sun19:02 – 20:22
- 4♀︎ Venus20:22 – 21:43
- 5☿︎ Mercury21:43 – 23:04
- 6☽︎ Moon23:04 – 00:24
- 7♄︎ Saturn00:24 – 01:45
- 8♃︎ Jupiter01:45 – 03:05
- 9♂︎ Mars03:05 – 04:26
- 10☉︎ Sun04:26 – 05:47
- 11♀︎ Venus05:47 – 07:07
- 12☿︎ Mercury07:07 – 08:28
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Sunday, 13 December 2026, the Sun rises at 08:27 and sets at 16:20: the day lasts 7h 53m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:28, lasts 16h 07m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
The Sun, from 08:27 to 09:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.