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 Monday, 18 January 2027: day of the Moon
- Sunrise
- 07:56
- Sunset
- 16:25
- Next sunrise
- 07:55
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/London).
Day
- 1☽︎ Moon07:56 – 08:39
- 2♄︎ Saturn08:39 – 09:21
- 3♃︎ Jupiter09:21 – 10:04
- 4♂︎ Mars10:04 – 10:46
- 5☉︎ Sun10:46 – 11:28
- 6♀︎ Venus11:28 – 12:11
- 7☿︎ Mercury12:11 – 12:53
- 8☽︎ Moon12:53 – 13:35
- 9♄︎ Saturn13:35 – 14:18
- 10♃︎ Jupiter14:18 – 15:00
- 11♂︎ Mars15:00 – 15:42
- 12☉︎ Sun15:42 – 16:25
Night
- 1♀︎ Venus16:25 – 17:42
- 2☿︎ Mercury17:42 – 19:00
- 3☽︎ Moon19:00 – 20:17
- 4♄︎ Saturn20:17 – 21:35
- 5♃︎ Jupiter21:35 – 22:53
- 6♂︎ Mars22:53 – 00:10
- 7☉︎ Sun00:10 – 01:28
- 8♀︎ Venus01:28 – 02:45
- 9☿︎ Mercury02:45 – 04:03
- 10☽︎ Moon04:03 – 05:20
- 11♄︎ Saturn05:20 – 06:38
- 12♃︎ Jupiter06:38 – 07:55
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 18 January 2027, the Sun rises at 07:56 and sets at 16:25: the day lasts 8h 28m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:55, lasts 15h 31m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Moon, from 07:56 to 08:39: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.