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, 11 August 2025: day of the Moon
- Sunrise
- 05:39
- Sunset
- 20:30
- Next sunrise
- 05:41
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:39 – 06:54
- 2♄︎ Saturn06:54 – 08:08
- 3♃︎ Jupiter08:08 – 09:22
- 4♂︎ Mars09:22 – 10:36
- 5☉︎ Sun10:36 – 11:50
- 6♀︎ Venus11:50 – 13:05
- 7☿︎ Mercury13:05 – 14:19
- 8☽︎ Moon14:19 – 15:33
- 9♄︎ Saturn15:33 – 16:47
- 10♃︎ Jupiter16:47 – 18:01
- 11♂︎ Mars18:01 – 19:16
- 12☉︎ Sun19:16 – 20:30
Night
- 1♀︎ Venus20:30 – 21:16
- 2☿︎ Mercury21:16 – 22:02
- 3☽︎ Moon22:02 – 22:48
- 4♄︎ Saturn22:48 – 23:34
- 5♃︎ Jupiter23:34 – 00:20
- 6♂︎ Mars00:20 – 01:05
- 7☉︎ Sun01:05 – 01:51
- 8♀︎ Venus01:51 – 02:37
- 9☿︎ Mercury02:37 – 03:23
- 10☽︎ Moon03:23 – 04:09
- 11♄︎ Saturn04:09 – 04:55
- 12♃︎ Jupiter04:55 – 05:41
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 11 August 2025, the Sun rises at 05:39 and sets at 20:30: the day lasts 14h 50m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:41, lasts 9h 11m: twelve night hours of 46 min.
Which planet rules the first hour that day?
The Moon, from 05:39 to 06:54: 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.