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 Tuesday, 15 December 2026: day of Mars
- Sunrise
- 08:29
- Sunset
- 16:21
- Next sunrise
- 08:30
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/Berlin).
Day
- 1♂︎ Mars08:29 – 09:08
- 2☉︎ Sun09:08 – 09:47
- 3♀︎ Venus09:47 – 10:27
- 4☿︎ Mercury10:27 – 11:06
- 5☽︎ Moon11:06 – 11:45
- 6♄︎ Saturn11:45 – 12:25
- 7♃︎ Jupiter12:25 – 13:04
- 8♂︎ Mars13:04 – 13:43
- 9☉︎ Sun13:43 – 14:23
- 10♀︎ Venus14:23 – 15:02
- 11☿︎ Mercury15:02 – 15:41
- 12☽︎ Moon15:41 – 16:21
Night
- 1♄︎ Saturn16:21 – 17:41
- 2♃︎ Jupiter17:41 – 19:02
- 3♂︎ Mars19:02 – 20:23
- 4☉︎ Sun20:23 – 21:44
- 5♀︎ Venus21:44 – 23:04
- 6☿︎ Mercury23:04 – 00:25
- 7☽︎ Moon00:25 – 01:46
- 8♄︎ Saturn01:46 – 03:07
- 9♃︎ Jupiter03:07 – 04:27
- 10♂︎ Mars04:27 – 05:48
- 11☉︎ Sun05:48 – 07:09
- 12♀︎ Venus07:09 – 08:30
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Tuesday, 15 December 2026, the Sun rises at 08:29 and sets at 16:21: the day lasts 7h 52m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:30, lasts 16h 09m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mars, from 08:29 to 09:08: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.