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, 25 September 2026: day of Venus
- Sunrise
- 06:51
- Sunset
- 18:52
- Next sunrise
- 06:52
A day hour lasts 1h 00m; a night hour, 1h 00m. Local time (Europe/London).
Day
- 1♀︎ Venus06:51 – 07:51
- 2☿︎ Mercury07:51 – 08:51
- 3☽︎ Moon08:51 – 09:51
- 4♄︎ Saturn09:51 – 10:51
- 5♃︎ Jupiter10:51 – 11:51
- 6♂︎ Mars11:51 – 12:51
- 7☉︎ Sun12:51 – 13:51
- 8♀︎ Venus13:51 – 14:51
- 9☿︎ Mercury14:51 – 15:51
- 10☽︎ Moon15:51 – 16:51
- 11♄︎ Saturn16:51 – 17:52
- 12♃︎ Jupiter17:52 – 18:52
Night
- 1♂︎ Mars18:52 – 19:52
- 2☉︎ Sun19:52 – 20:52
- 3♀︎ Venus20:52 – 21:52
- 4☿︎ Mercury21:52 – 22:52
- 5☽︎ Moon22:52 – 23:52
- 6♄︎ Saturn23:52 – 00:52
- 7♃︎ Jupiter00:52 – 01:52
- 8♂︎ Mars01:52 – 02:52
- 9☉︎ Sun02:52 – 03:52
- 10♀︎ Venus03:52 – 04:52
- 11☿︎ Mercury04:52 – 05:52
- 12☽︎ Moon05:52 – 06:52
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 25 September 2026, the Sun rises at 06:51 and sets at 18:52: the day lasts 12h 01m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 06:52, lasts 12h 01m: twelve night hours of 1h 00m.
Which planet rules the first hour that day?
Venus, from 06:51 to 07:51: 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.