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 Monday, 12 May 2025: day of the Moon
- Sunrise
- 05:13
- Sunset
- 20:41
- Next sunrise
- 05:11
A day hour lasts 1h 17m; a night hour, 42 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:13 – 06:30
- 2♄︎ Saturn06:30 – 07:47
- 3♃︎ Jupiter07:47 – 09:05
- 4♂︎ Mars09:05 – 10:22
- 5☉︎ Sun10:22 – 11:39
- 6♀︎ Venus11:39 – 12:57
- 7☿︎ Mercury12:57 – 14:14
- 8☽︎ Moon14:14 – 15:32
- 9♄︎ Saturn15:32 – 16:49
- 10♃︎ Jupiter16:49 – 18:06
- 11♂︎ Mars18:06 – 19:24
- 12☉︎ Sun19:24 – 20:41
Night
- 1♀︎ Venus20:41 – 21:24
- 2☿︎ Mercury21:24 – 22:06
- 3☽︎ Moon22:06 – 22:49
- 4♄︎ Saturn22:49 – 23:31
- 5♃︎ Jupiter23:31 – 00:14
- 6♂︎ Mars00:14 – 00:56
- 7☉︎ Sun00:56 – 01:39
- 8♀︎ Venus01:39 – 02:21
- 9☿︎ Mercury02:21 – 03:04
- 10☽︎ Moon03:04 – 03:46
- 11♄︎ Saturn03:46 – 04:28
- 12♃︎ Jupiter04:28 – 05:11
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 12 May 2025, the Sun rises at 05:13 and sets at 20:41: the day lasts 15h 29m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:11, lasts 8h 30m: twelve night hours of 42 min.
Which planet rules the first hour that day?
The Moon, from 05:13 to 06:30: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.