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, 12 September 2025: day of Venus
- Sunrise
- 07:00
- Sunset
- 19:51
- Next sunrise
- 07:02
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/Berlin).
Day
- 1♀︎ Venus07:00 – 08:04
- 2☿︎ Mercury08:04 – 09:08
- 3☽︎ Moon09:08 – 10:13
- 4♄︎ Saturn10:13 – 11:17
- 5♃︎ Jupiter11:17 – 12:21
- 6♂︎ Mars12:21 – 13:25
- 7☉︎ Sun13:25 – 14:30
- 8♀︎ Venus14:30 – 15:34
- 9☿︎ Mercury15:34 – 16:38
- 10☽︎ Moon16:38 – 17:42
- 11♄︎ Saturn17:42 – 18:46
- 12♃︎ Jupiter18:46 – 19:51
Night
- 1♂︎ Mars19:51 – 20:47
- 2☉︎ Sun20:47 – 21:42
- 3♀︎ Venus21:42 – 22:38
- 4☿︎ Mercury22:38 – 23:34
- 5☽︎ Moon23:34 – 00:30
- 6♄︎ Saturn00:30 – 01:26
- 7♃︎ Jupiter01:26 – 02:22
- 8♂︎ Mars02:22 – 03:18
- 9☉︎ Sun03:18 – 04:14
- 10♀︎ Venus04:14 – 05:10
- 11☿︎ Mercury05:10 – 06:06
- 12☽︎ Moon06:06 – 07:02
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Friday, 12 September 2025, the Sun rises at 07:00 and sets at 19:51: the day lasts 12h 51m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 07:02, lasts 11h 11m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Venus, from 07:00 to 08:04: 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.