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 July 2025: day of the Moon
- Sunrise
- 05:08
- Sunset
- 21:04
- Next sunrise
- 05:10
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:08 – 06:28
- 2♄︎ Saturn06:28 – 07:48
- 3♃︎ Jupiter07:48 – 09:07
- 4♂︎ Mars09:07 – 10:27
- 5☉︎ Sun10:27 – 11:46
- 6♀︎ Venus11:46 – 13:06
- 7☿︎ Mercury13:06 – 14:26
- 8☽︎ Moon14:26 – 15:45
- 9♄︎ Saturn15:45 – 17:05
- 10♃︎ Jupiter17:05 – 18:25
- 11♂︎ Mars18:25 – 19:44
- 12☉︎ Sun19:44 – 21:04
Night
- 1♀︎ Venus21:04 – 21:44
- 2☿︎ Mercury21:44 – 22:25
- 3☽︎ Moon22:25 – 23:05
- 4♄︎ Saturn23:05 – 23:46
- 5♃︎ Jupiter23:46 – 00:26
- 6♂︎ Mars00:26 – 01:07
- 7☉︎ Sun01:07 – 01:47
- 8♀︎ Venus01:47 – 02:28
- 9☿︎ Mercury02:28 – 03:08
- 10☽︎ Moon03:08 – 03:49
- 11♄︎ Saturn03:49 – 04:29
- 12♃︎ Jupiter04:29 – 05:10
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 21 July 2025, the Sun rises at 05:08 and sets at 21:04: the day lasts 15h 56m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 05:10, lasts 8h 06m: twelve night hours of 40 min.
Which planet rules the first hour that day?
The Moon, from 05:08 to 06:28: 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.