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, 21 September 2026: day of the Moon
- Sunrise
- 06:44
- Sunset
- 19:01
- Next sunrise
- 06:46
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Europe/London).
Day
- 1☽︎ Moon06:44 – 07:46
- 2♄︎ Saturn07:46 – 08:47
- 3♃︎ Jupiter08:47 – 09:48
- 4♂︎ Mars09:48 – 10:50
- 5☉︎ Sun10:50 – 11:51
- 6♀︎ Venus11:51 – 12:53
- 7☿︎ Mercury12:53 – 13:54
- 8☽︎ Moon13:54 – 14:55
- 9♄︎ Saturn14:55 – 15:57
- 10♃︎ Jupiter15:57 – 16:58
- 11♂︎ Mars16:58 – 17:59
- 12☉︎ Sun17:59 – 19:01
Night
- 1♀︎ Venus19:01 – 20:00
- 2☿︎ Mercury20:00 – 20:58
- 3☽︎ Moon20:58 – 21:57
- 4♄︎ Saturn21:57 – 22:56
- 5♃︎ Jupiter22:56 – 23:55
- 6♂︎ Mars23:55 – 00:53
- 7☉︎ Sun00:53 – 01:52
- 8♀︎ Venus01:52 – 02:51
- 9☿︎ Mercury02:51 – 03:50
- 10☽︎ Moon03:50 – 04:48
- 11♄︎ Saturn04:48 – 05:47
- 12♃︎ Jupiter05:47 – 06:46
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 21 September 2026, the Sun rises at 06:44 and sets at 19:01: the day lasts 12h 16m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 06:46, lasts 11h 45m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Moon, from 06:44 to 07:46: 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.