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 Friday, 31 October 2025: day of Venus
- Sunrise
- 06:52
- Sunset
- 16:34
- Next sunrise
- 06:54
A day hour lasts 49 min; a night hour, 1h 12m. Local time (Europe/London).
Day
- 1♀︎ Venus06:52 – 07:41
- 2☿︎ Mercury07:41 – 08:29
- 3☽︎ Moon08:29 – 09:18
- 4♄︎ Saturn09:18 – 10:06
- 5♃︎ Jupiter10:06 – 10:55
- 6♂︎ Mars10:55 – 11:43
- 7☉︎ Sun11:43 – 12:32
- 8♀︎ Venus12:32 – 13:20
- 9☿︎ Mercury13:20 – 14:09
- 10☽︎ Moon14:09 – 14:57
- 11♄︎ Saturn14:57 – 15:46
- 12♃︎ Jupiter15:46 – 16:34
Night
- 1♂︎ Mars16:34 – 17:46
- 2☉︎ Sun17:46 – 18:58
- 3♀︎ Venus18:58 – 20:09
- 4☿︎ Mercury20:09 – 21:21
- 5☽︎ Moon21:21 – 22:33
- 6♄︎ Saturn22:33 – 23:44
- 7♃︎ Jupiter23:44 – 00:56
- 8♂︎ Mars00:56 – 02:07
- 9☉︎ Sun02:07 – 03:19
- 10♀︎ Venus03:19 – 04:31
- 11☿︎ Mercury04:31 – 05:42
- 12☽︎ Moon05:42 – 06:54
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 31 October 2025, the Sun rises at 06:52 and sets at 16:34: the day lasts 9h 42m, that is twelve day hours of 49 min. The night, until the next sunrise at 06:54, lasts 14h 19m: twelve night hours of 1h 12m.
Which planet rules the first hour that day?
Venus, from 06:52 to 07:41: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.