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, 21 January 2027: day of Jupiter
- Sunrise
- 07:53
- Sunset
- 16:30
- Next sunrise
- 07:52
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/London).
Day
- 1♃︎ Jupiter07:53 – 08:36
- 2♂︎ Mars08:36 – 09:19
- 3☉︎ Sun09:19 – 10:02
- 4♀︎ Venus10:02 – 10:45
- 5☿︎ Mercury10:45 – 11:28
- 6☽︎ Moon11:28 – 12:11
- 7♄︎ Saturn12:11 – 12:55
- 8♃︎ Jupiter12:55 – 13:38
- 9♂︎ Mars13:38 – 14:21
- 10☉︎ Sun14:21 – 15:04
- 11♀︎ Venus15:04 – 15:47
- 12☿︎ Mercury15:47 – 16:30
Night
- 1☽︎ Moon16:30 – 17:47
- 2♄︎ Saturn17:47 – 19:03
- 3♃︎ Jupiter19:03 – 20:20
- 4♂︎ Mars20:20 – 21:37
- 5☉︎ Sun21:37 – 22:54
- 6♀︎ Venus22:54 – 00:11
- 7☿︎ Mercury00:11 – 01:28
- 8☽︎ Moon01:28 – 02:45
- 9♄︎ Saturn02:45 – 04:02
- 10♃︎ Jupiter04:02 – 05:18
- 11♂︎ Mars05:18 – 06:35
- 12☉︎ Sun06:35 – 07:52
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Thursday, 21 January 2027, the Sun rises at 07:53 and sets at 16:30: the day lasts 8h 36m, that is twelve day hours of 43 min. The night, until the next sunrise at 07:52, lasts 15h 23m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
Jupiter, from 07:53 to 08:36: 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.