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 Wednesday, 3 September 2025: day of Mercury
- Sunrise
- 06:49
- Sunset
- 20:12
- Next sunrise
- 06:50
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Europe/Berlin).
Day
- 1☿︎ Mercury06:49 – 07:56
- 2☽︎ Moon07:56 – 09:03
- 3♄︎ Saturn09:03 – 10:09
- 4♃︎ Jupiter10:09 – 11:16
- 5♂︎ Mars11:16 – 12:23
- 6☉︎ Sun12:23 – 13:30
- 7♀︎ Venus13:30 – 14:37
- 8☿︎ Mercury14:37 – 15:44
- 9☽︎ Moon15:44 – 16:51
- 10♄︎ Saturn16:51 – 17:58
- 11♃︎ Jupiter17:58 – 19:05
- 12♂︎ Mars19:05 – 20:12
Night
- 1☉︎ Sun20:12 – 21:06
- 2♀︎ Venus21:06 – 21:59
- 3☿︎ Mercury21:59 – 22:52
- 4☽︎ Moon22:52 – 23:45
- 5♄︎ Saturn23:45 – 00:38
- 6♃︎ Jupiter00:38 – 01:31
- 7♂︎ Mars01:31 – 02:24
- 8☉︎ Sun02:24 – 03:18
- 9♀︎ Venus03:18 – 04:11
- 10☿︎ Mercury04:11 – 05:04
- 11☽︎ Moon05:04 – 05:57
- 12♄︎ Saturn05:57 – 06:50
Other cities · Germany
Questions
How are the planetary hours calculated in Cologne?
On Wednesday, 3 September 2025, the Sun rises at 06:49 and sets at 20:12: the day lasts 13h 24m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 06:50, lasts 10h 38m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Mercury, from 06:49 to 07:56: 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.