Planetary hours
in London.
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, 18 December 2027: day of Saturn
- Sunrise
- 08:01
- Sunset
- 15:52
- Next sunrise
- 08:02
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1♄︎ Saturn08:01 – 08:40
- 2♃︎ Jupiter08:40 – 09:20
- 3♂︎ Mars09:20 – 09:59
- 4☉︎ Sun09:59 – 10:38
- 5♀︎ Venus10:38 – 11:17
- 6☿︎ Mercury11:17 – 11:56
- 7☽︎ Moon11:56 – 12:36
- 8♄︎ Saturn12:36 – 13:15
- 9♃︎ Jupiter13:15 – 13:54
- 10♂︎ Mars13:54 – 14:33
- 11☉︎ Sun14:33 – 15:12
- 12♀︎ Venus15:12 – 15:52
Night
- 1☿︎ Mercury15:52 – 17:12
- 2☽︎ Moon17:12 – 18:33
- 3♄︎ Saturn18:33 – 19:54
- 4♃︎ Jupiter19:54 – 21:15
- 5♂︎ Mars21:15 – 22:36
- 6☉︎ Sun22:36 – 23:57
- 7♀︎ Venus23:57 – 01:18
- 8☿︎ Mercury01:18 – 02:38
- 9☽︎ Moon02:38 – 03:59
- 10♄︎ Saturn03:59 – 05:20
- 11♃︎ Jupiter05:20 – 06:41
- 12♂︎ Mars06:41 – 08:02
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Saturday, 18 December 2027, the Sun rises at 08:01 and sets at 15:52: the day lasts 7h 50m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:02, lasts 16h 10m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Saturn, from 08:01 to 08:40: 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.