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, 4 September 2026: day of Venus
- Sunrise
- 06:17
- Sunset
- 19:40
- Next sunrise
- 06:19
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Europe/London).
Day
- 1♀︎ Venus06:17 – 07:24
- 2☿︎ Mercury07:24 – 08:31
- 3☽︎ Moon08:31 – 09:38
- 4♄︎ Saturn09:38 – 10:45
- 5♃︎ Jupiter10:45 – 11:52
- 6♂︎ Mars11:52 – 12:59
- 7☉︎ Sun12:59 – 14:05
- 8♀︎ Venus14:05 – 15:12
- 9☿︎ Mercury15:12 – 16:19
- 10☽︎ Moon16:19 – 17:26
- 11♄︎ Saturn17:26 – 18:33
- 12♃︎ Jupiter18:33 – 19:40
Night
- 1♂︎ Mars19:40 – 20:33
- 2☉︎ Sun20:33 – 21:26
- 3♀︎ Venus21:26 – 22:20
- 4☿︎ Mercury22:20 – 23:13
- 5☽︎ Moon23:13 – 00:06
- 6♄︎ Saturn00:06 – 00:59
- 7♃︎ Jupiter00:59 – 01:53
- 8♂︎ Mars01:53 – 02:46
- 9☉︎ Sun02:46 – 03:39
- 10♀︎ Venus03:39 – 04:32
- 11☿︎ Mercury04:32 – 05:26
- 12☽︎ Moon05:26 – 06:19
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 4 September 2026, the Sun rises at 06:17 and sets at 19:40: the day lasts 13h 23m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 06:19, lasts 10h 39m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Venus, from 06:17 to 07:24: 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.