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 Wednesday, 21 October 2026: day of Mercury
- Sunrise
- 07:34
- Sunset
- 17:54
- Next sunrise
- 07:36
A day hour lasts 52 min; a night hour, 1h 08m. Local time (Europe/London).
Day
- 1☿︎ Mercury07:34 – 08:26
- 2☽︎ Moon08:26 – 09:18
- 3♄︎ Saturn09:18 – 10:09
- 4♃︎ Jupiter10:09 – 11:01
- 5♂︎ Mars11:01 – 11:53
- 6☉︎ Sun11:53 – 12:44
- 7♀︎ Venus12:44 – 13:36
- 8☿︎ Mercury13:36 – 14:28
- 9☽︎ Moon14:28 – 15:19
- 10♄︎ Saturn15:19 – 16:11
- 11♃︎ Jupiter16:11 – 17:03
- 12♂︎ Mars17:03 – 17:54
Night
- 1☉︎ Sun17:54 – 19:03
- 2♀︎ Venus19:03 – 20:11
- 3☿︎ Mercury20:11 – 21:20
- 4☽︎ Moon21:20 – 22:28
- 5♄︎ Saturn22:28 – 23:37
- 6♃︎ Jupiter23:37 – 00:45
- 7♂︎ Mars00:45 – 01:54
- 8☉︎ Sun01:54 – 03:02
- 9♀︎ Venus03:02 – 04:10
- 10☿︎ Mercury04:10 – 05:19
- 11☽︎ Moon05:19 – 06:27
- 12♄︎ Saturn06:27 – 07:36
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Wednesday, 21 October 2026, the Sun rises at 07:34 and sets at 17:54: the day lasts 10h 20m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:36, lasts 13h 42m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
Mercury, from 07:34 to 08:26: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.