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 Friday, 16 January 2026: day of Venus
- Sunrise
- 08:28
- Sunset
- 16:51
- Next sunrise
- 08:27
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Berlin).
Day
- 1♀︎ Venus08:28 – 09:10
- 2☿︎ Mercury09:10 – 09:52
- 3☽︎ Moon09:52 – 10:34
- 4♄︎ Saturn10:34 – 11:16
- 5♃︎ Jupiter11:16 – 11:58
- 6♂︎ Mars11:58 – 12:40
- 7☉︎ Sun12:40 – 13:22
- 8♀︎ Venus13:22 – 14:04
- 9☿︎ Mercury14:04 – 14:46
- 10☽︎ Moon14:46 – 15:28
- 11♄︎ Saturn15:28 – 16:09
- 12♃︎ Jupiter16:09 – 16:51
Night
- 1♂︎ Mars16:51 – 18:09
- 2☉︎ Sun18:09 – 19:27
- 3♀︎ Venus19:27 – 20:45
- 4☿︎ Mercury20:45 – 22:03
- 5☽︎ Moon22:03 – 23:21
- 6♄︎ Saturn23:21 – 00:39
- 7♃︎ Jupiter00:39 – 01:57
- 8♂︎ Mars01:57 – 03:15
- 9☉︎ Sun03:15 – 04:33
- 10♀︎ Venus04:33 – 05:51
- 11☿︎ Mercury05:51 – 07:09
- 12☽︎ Moon07:09 – 08:27
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Friday, 16 January 2026, the Sun rises at 08:28 and sets at 16:51: the day lasts 8h 24m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:27, lasts 15h 35m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Venus, from 08:28 to 09:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.