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, 18 September 2026: day of Venus
- Sunrise
- 06:40
- Sunset
- 19:08
- Next sunrise
- 06:41
A day hour lasts 1h 02m; a night hour, 58 min. Local time (Europe/London).
Day
- 1♀︎ Venus06:40 – 07:42
- 2☿︎ Mercury07:42 – 08:44
- 3☽︎ Moon08:44 – 09:47
- 4♄︎ Saturn09:47 – 10:49
- 5♃︎ Jupiter10:49 – 11:51
- 6♂︎ Mars11:51 – 12:54
- 7☉︎ Sun12:54 – 13:56
- 8♀︎ Venus13:56 – 14:58
- 9☿︎ Mercury14:58 – 16:01
- 10☽︎ Moon16:01 – 17:03
- 11♄︎ Saturn17:03 – 18:05
- 12♃︎ Jupiter18:05 – 19:08
Night
- 1♂︎ Mars19:08 – 20:06
- 2☉︎ Sun20:06 – 21:03
- 3♀︎ Venus21:03 – 22:01
- 4☿︎ Mercury22:01 – 22:59
- 5☽︎ Moon22:59 – 23:57
- 6♄︎ Saturn23:57 – 00:54
- 7♃︎ Jupiter00:54 – 01:52
- 8♂︎ Mars01:52 – 02:50
- 9☉︎ Sun02:50 – 03:48
- 10♀︎ Venus03:48 – 04:46
- 11☿︎ Mercury04:46 – 05:43
- 12☽︎ Moon05:43 – 06:41
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 18 September 2026, the Sun rises at 06:40 and sets at 19:08: the day lasts 12h 28m, that is twelve day hours of 1h 02m. The night, until the next sunrise at 06:41, lasts 11h 33m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Venus, from 06:40 to 07:42: 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.