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, 31 December 2026: day of Jupiter
- Sunrise
- 08:06
- Sunset
- 16:00
- Next sunrise
- 08:06
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♃︎ Jupiter08:06 – 08:45
- 2♂︎ Mars08:45 – 09:25
- 3☉︎ Sun09:25 – 10:04
- 4♀︎ Venus10:04 – 10:44
- 5☿︎ Mercury10:44 – 11:24
- 6☽︎ Moon11:24 – 12:03
- 7♄︎ Saturn12:03 – 12:43
- 8♃︎ Jupiter12:43 – 13:22
- 9♂︎ Mars13:22 – 14:02
- 10☉︎ Sun14:02 – 14:41
- 11♀︎ Venus14:41 – 15:21
- 12☿︎ Mercury15:21 – 16:00
Night
- 1☽︎ Moon16:00 – 17:21
- 2♄︎ Saturn17:21 – 18:41
- 3♃︎ Jupiter18:41 – 20:02
- 4♂︎ Mars20:02 – 21:22
- 5☉︎ Sun21:22 – 22:43
- 6♀︎ Venus22:43 – 00:03
- 7☿︎ Mercury00:03 – 01:23
- 8☽︎ Moon01:23 – 02:44
- 9♄︎ Saturn02:44 – 04:04
- 10♃︎ Jupiter04:04 – 05:25
- 11♂︎ Mars05:25 – 06:45
- 12☉︎ Sun06:45 – 08:06
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Thursday, 31 December 2026, the Sun rises at 08:06 and sets at 16:00: the day lasts 7h 55m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:06, lasts 16h 05m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Jupiter, from 08:06 to 08:45: 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.