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, 20 August 2025: day of Mercury
- Sunrise
- 06:23
- Sunset
- 20:42
- Next sunrise
- 06:25
A day hour lasts 1h 12m; a night hour, 49 min. Local time (Europe/Berlin).
Day
- 1☿︎ Mercury06:23 – 07:35
- 2☽︎ Moon07:35 – 08:46
- 3♄︎ Saturn08:46 – 09:58
- 4♃︎ Jupiter09:58 – 11:09
- 5♂︎ Mars11:09 – 12:21
- 6☉︎ Sun12:21 – 13:32
- 7♀︎ Venus13:32 – 14:44
- 8☿︎ Mercury14:44 – 15:55
- 9☽︎ Moon15:55 – 17:07
- 10♄︎ Saturn17:07 – 18:18
- 11♃︎ Jupiter18:18 – 19:30
- 12♂︎ Mars19:30 – 20:42
Night
- 1☉︎ Sun20:42 – 21:30
- 2♀︎ Venus21:30 – 22:19
- 3☿︎ Mercury22:19 – 23:07
- 4☽︎ Moon23:07 – 23:56
- 5♄︎ Saturn23:56 – 00:45
- 6♃︎ Jupiter00:45 – 01:33
- 7♂︎ Mars01:33 – 02:22
- 8☉︎ Sun02:22 – 03:10
- 9♀︎ Venus03:10 – 03:59
- 10☿︎ Mercury03:59 – 04:48
- 11☽︎ Moon04:48 – 05:36
- 12♄︎ Saturn05:36 – 06:25
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Wednesday, 20 August 2025, the Sun rises at 06:23 and sets at 20:42: the day lasts 14h 18m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 06:25, lasts 9h 43m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mercury, from 06:23 to 07:35: 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.