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, 3 January 2025: day of Venus
- Sunrise
- 08:05
- Sunset
- 16:04
- Next sunrise
- 08:05
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♀︎ Venus08:05 – 08:45
- 2☿︎ Mercury08:45 – 09:25
- 3☽︎ Moon09:25 – 10:05
- 4♄︎ Saturn10:05 – 10:45
- 5♃︎ Jupiter10:45 – 11:25
- 6♂︎ Mars11:25 – 12:05
- 7☉︎ Sun12:05 – 12:45
- 8♀︎ Venus12:45 – 13:25
- 9☿︎ Mercury13:25 – 14:04
- 10☽︎ Moon14:04 – 14:44
- 11♄︎ Saturn14:44 – 15:24
- 12♃︎ Jupiter15:24 – 16:04
Night
- 1♂︎ Mars16:04 – 17:24
- 2☉︎ Sun17:24 – 18:44
- 3♀︎ Venus18:44 – 20:04
- 4☿︎ Mercury20:04 – 21:24
- 5☽︎ Moon21:24 – 22:45
- 6♄︎ Saturn22:45 – 00:05
- 7♃︎ Jupiter00:05 – 01:25
- 8♂︎ Mars01:25 – 02:45
- 9☉︎ Sun02:45 – 04:05
- 10♀︎ Venus04:05 – 05:25
- 11☿︎ Mercury05:25 – 06:45
- 12☽︎ Moon06:45 – 08:05
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 3 January 2025, the Sun rises at 08:05 and sets at 16:04: the day lasts 7h 59m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:05, lasts 16h 01m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Venus, from 08:05 to 08:45: 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.