Planetary hours
in Cologne.
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, 13 December 2025: day of Saturn
- Sunrise
- 08:26
- Sunset
- 16:25
- Next sunrise
- 08:27
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Berlin).
Day
- 1♄︎ Saturn08:26 – 09:06
- 2♃︎ Jupiter09:06 – 09:46
- 3♂︎ Mars09:46 – 10:26
- 4☉︎ Sun10:26 – 11:06
- 5♀︎ Venus11:06 – 11:46
- 6☿︎ Mercury11:46 – 12:26
- 7☽︎ Moon12:26 – 13:06
- 8♄︎ Saturn13:06 – 13:46
- 9♃︎ Jupiter13:46 – 14:26
- 10♂︎ Mars14:26 – 15:06
- 11☉︎ Sun15:06 – 15:45
- 12♀︎ Venus15:45 – 16:25
Night
- 1☿︎ Mercury16:25 – 17:46
- 2☽︎ Moon17:46 – 19:06
- 3♄︎ Saturn19:06 – 20:26
- 4♃︎ Jupiter20:26 – 21:46
- 5♂︎ Mars21:46 – 23:06
- 6☉︎ Sun23:06 – 00:26
- 7♀︎ Venus00:26 – 01:46
- 8☿︎ Mercury01:46 – 03:07
- 9☽︎ Moon03:07 – 04:27
- 10♄︎ Saturn04:27 – 05:47
- 11♃︎ Jupiter05:47 – 07:07
- 12♂︎ Mars07:07 – 08:27
Other cities · Germany
Questions
How are the planetary hours calculated in Cologne?
On Saturday, 13 December 2025, the Sun rises at 08:26 and sets at 16:25: the day lasts 7h 59m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:27, lasts 16h 02m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Saturn, from 08:26 to 09:06: 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.