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, 20 August 2025: day of Mercury
- Sunrise
- 06:27
- Sunset
- 20:42
- Next sunrise
- 06:28
A day hour lasts 1h 11m; a night hour, 49 min. Local time (Europe/Berlin).
Day
- 1☿︎ Mercury06:27 – 07:38
- 2☽︎ Moon07:38 – 08:49
- 3♄︎ Saturn08:49 – 10:01
- 4♃︎ Jupiter10:01 – 11:12
- 5♂︎ Mars11:12 – 12:23
- 6☉︎ Sun12:23 – 13:35
- 7♀︎ Venus13:35 – 14:46
- 8☿︎ Mercury14:46 – 15:57
- 9☽︎ Moon15:57 – 17:08
- 10♄︎ Saturn17:08 – 18:20
- 11♃︎ Jupiter18:20 – 19:31
- 12♂︎ Mars19:31 – 20:42
Night
- 1☉︎ Sun20:42 – 21:31
- 2♀︎ Venus21:31 – 22:20
- 3☿︎ Mercury22:20 – 23:09
- 4☽︎ Moon23:09 – 23:58
- 5♄︎ Saturn23:58 – 00:46
- 6♃︎ Jupiter00:46 – 01:35
- 7♂︎ Mars01:35 – 02:24
- 8☉︎ Sun02:24 – 03:13
- 9♀︎ Venus03:13 – 04:02
- 10☿︎ Mercury04:02 – 04:51
- 11☽︎ Moon04:51 – 05:40
- 12♄︎ Saturn05:40 – 06:28
Other cities · Germany
Questions
How are the planetary hours calculated in Cologne?
On Wednesday, 20 August 2025, the Sun rises at 06:27 and sets at 20:42: the day lasts 14h 15m, that is twelve day hours of 1h 11m. The night, until the next sunrise at 06:28, lasts 9h 46m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Mercury, from 06:27 to 07:38: 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.