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 Saturday, 31 January 2026: day of Saturn
- Sunrise
- 08:10
- Sunset
- 17:17
- Next sunrise
- 08:08
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/Berlin).
Day
- 1♄︎ Saturn08:10 – 08:55
- 2♃︎ Jupiter08:55 – 09:41
- 3♂︎ Mars09:41 – 10:26
- 4☉︎ Sun10:26 – 11:12
- 5♀︎ Venus11:12 – 11:58
- 6☿︎ Mercury11:58 – 12:43
- 7☽︎ Moon12:43 – 13:29
- 8♄︎ Saturn13:29 – 14:15
- 9♃︎ Jupiter14:15 – 15:00
- 10♂︎ Mars15:00 – 15:46
- 11☉︎ Sun15:46 – 16:32
- 12♀︎ Venus16:32 – 17:17
Night
- 1☿︎ Mercury17:17 – 18:31
- 2☽︎ Moon18:31 – 19:46
- 3♄︎ Saturn19:46 – 21:00
- 4♃︎ Jupiter21:00 – 22:14
- 5♂︎ Mars22:14 – 23:28
- 6☉︎ Sun23:28 – 00:43
- 7♀︎ Venus00:43 – 01:57
- 8☿︎ Mercury01:57 – 03:11
- 9☽︎ Moon03:11 – 04:25
- 10♄︎ Saturn04:25 – 05:40
- 11♃︎ Jupiter05:40 – 06:54
- 12♂︎ Mars06:54 – 08:08
Other cities · Germany
Questions
How are the planetary hours calculated in Dortmund?
On Saturday, 31 January 2026, the Sun rises at 08:10 and sets at 17:17: the day lasts 9h 08m, that is twelve day hours of 46 min. The night, until the next sunrise at 08:08, lasts 14h 51m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
Saturn, from 08:10 to 08:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.