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 Thursday, 10 December 2026: day of Jupiter
- Sunrise
- 07:54
- Sunset
- 15:51
- Next sunrise
- 07:55
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♃︎ Jupiter07:54 – 08:34
- 2♂︎ Mars08:34 – 09:14
- 3☉︎ Sun09:14 – 09:54
- 4♀︎ Venus09:54 – 10:33
- 5☿︎ Mercury10:33 – 11:13
- 6☽︎ Moon11:13 – 11:53
- 7♄︎ Saturn11:53 – 12:32
- 8♃︎ Jupiter12:32 – 13:12
- 9♂︎ Mars13:12 – 13:52
- 10☉︎ Sun13:52 – 14:32
- 11♀︎ Venus14:32 – 15:11
- 12☿︎ Mercury15:11 – 15:51
Night
- 1☽︎ Moon15:51 – 17:11
- 2♄︎ Saturn17:11 – 18:32
- 3♃︎ Jupiter18:32 – 19:52
- 4♂︎ Mars19:52 – 21:12
- 5☉︎ Sun21:12 – 22:33
- 6♀︎ Venus22:33 – 23:53
- 7☿︎ Mercury23:53 – 01:14
- 8☽︎ Moon01:14 – 02:34
- 9♄︎ Saturn02:34 – 03:54
- 10♃︎ Jupiter03:54 – 05:15
- 11♂︎ Mars05:15 – 06:35
- 12☉︎ Sun06:35 – 07:55
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Thursday, 10 December 2026, the Sun rises at 07:54 and sets at 15:51: the day lasts 7h 57m, that is twelve day hours of 40 min. The night, until the next sunrise at 07:55, lasts 16h 04m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Jupiter, from 07:54 to 08:34: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.