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 Tuesday, 23 December 2025: day of Mars
- Sunrise
- 08:33
- Sunset
- 16:29
- Next sunrise
- 08:33
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/Berlin).
Day
- 1♂︎ Mars08:33 – 09:13
- 2☉︎ Sun09:13 – 09:52
- 3♀︎ Venus09:52 – 10:32
- 4☿︎ Mercury10:32 – 11:12
- 5☽︎ Moon11:12 – 11:51
- 6♄︎ Saturn11:51 – 12:31
- 7♃︎ Jupiter12:31 – 13:11
- 8♂︎ Mars13:11 – 13:50
- 9☉︎ Sun13:50 – 14:30
- 10♀︎ Venus14:30 – 15:09
- 11☿︎ Mercury15:09 – 15:49
- 12☽︎ Moon15:49 – 16:29
Night
- 1♄︎ Saturn16:29 – 17:49
- 2♃︎ Jupiter17:49 – 19:10
- 3♂︎ Mars19:10 – 20:30
- 4☉︎ Sun20:30 – 21:50
- 5♀︎ Venus21:50 – 23:11
- 6☿︎ Mercury23:11 – 00:31
- 7☽︎ Moon00:31 – 01:51
- 8♄︎ Saturn01:51 – 03:12
- 9♃︎ Jupiter03:12 – 04:32
- 10♂︎ Mars04:32 – 05:53
- 11☉︎ Sun05:53 – 07:13
- 12♀︎ Venus07:13 – 08:33
Other cities · Germany
Questions
How are the planetary hours calculated in Cologne?
On Tuesday, 23 December 2025, the Sun rises at 08:33 and sets at 16:29: the day lasts 7h 56m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:33, lasts 16h 05m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Mars, from 08:33 to 09:13: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.