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 July 2026: day of Venus
- Sunrise
- 05:22
- Sunset
- 20:50
- Next sunrise
- 05:24
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/London).
Day
- 1♀︎ Venus05:22 – 06:39
- 2☿︎ Mercury06:39 – 07:57
- 3☽︎ Moon07:57 – 09:14
- 4♄︎ Saturn09:14 – 10:31
- 5♃︎ Jupiter10:31 – 11:49
- 6♂︎ Mars11:49 – 13:06
- 7☉︎ Sun13:06 – 14:23
- 8♀︎ Venus14:23 – 15:41
- 9☿︎ Mercury15:41 – 16:58
- 10☽︎ Moon16:58 – 18:15
- 11♄︎ Saturn18:15 – 19:32
- 12♃︎ Jupiter19:32 – 20:50
Night
- 1♂︎ Mars20:50 – 21:33
- 2☉︎ Sun21:33 – 22:15
- 3♀︎ Venus22:15 – 22:58
- 4☿︎ Mercury22:58 – 23:41
- 5☽︎ Moon23:41 – 00:24
- 6♄︎ Saturn00:24 – 01:07
- 7♃︎ Jupiter01:07 – 01:50
- 8♂︎ Mars01:50 – 02:32
- 9☉︎ Sun02:32 – 03:15
- 10♀︎ Venus03:15 – 03:58
- 11☿︎ Mercury03:58 – 04:41
- 12☽︎ Moon04:41 – 05:24
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 31 July 2026, the Sun rises at 05:22 and sets at 20:50: the day lasts 15h 28m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:24, lasts 8h 34m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Venus, from 05:22 to 06:39: 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.