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 Monday, 10 August 2026: day of the Moon
- Sunrise
- 05:37
- Sunset
- 20:32
- Next sunrise
- 05:39
A day hour lasts 1h 15m; a night hour, 46 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:37 – 06:52
- 2♄︎ Saturn06:52 – 08:07
- 3♃︎ Jupiter08:07 – 09:21
- 4♂︎ Mars09:21 – 10:36
- 5☉︎ Sun10:36 – 11:50
- 6♀︎ Venus11:50 – 13:05
- 7☿︎ Mercury13:05 – 14:19
- 8☽︎ Moon14:19 – 15:34
- 9♄︎ Saturn15:34 – 16:49
- 10♃︎ Jupiter16:49 – 18:03
- 11♂︎ Mars18:03 – 19:18
- 12☉︎ Sun19:18 – 20:32
Night
- 1♀︎ Venus20:32 – 21:18
- 2☿︎ Mercury21:18 – 22:03
- 3☽︎ Moon22:03 – 22:49
- 4♄︎ Saturn22:49 – 23:35
- 5♃︎ Jupiter23:35 – 00:20
- 6♂︎ Mars00:20 – 01:06
- 7☉︎ Sun01:06 – 01:51
- 8♀︎ Venus01:51 – 02:37
- 9☿︎ Mercury02:37 – 03:22
- 10☽︎ Moon03:22 – 04:08
- 11♄︎ Saturn04:08 – 04:53
- 12♃︎ Jupiter04:53 – 05:39
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 10 August 2026, the Sun rises at 05:37 and sets at 20:32: the day lasts 14h 55m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 05:39, lasts 9h 07m: twelve night hours of 46 min.
Which planet rules the first hour that day?
The Moon, from 05:37 to 06:52: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.