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 Sunday, 31 January 2027: day of the Sun
- Sunrise
- 07:40
- Sunset
- 16:47
- Next sunrise
- 07:39
A day hour lasts 46 min; a night hour, 1h 14m. Local time (Europe/London).
Day
- 1☉︎ Sun07:40 – 08:26
- 2♀︎ Venus08:26 – 09:11
- 3☿︎ Mercury09:11 – 09:57
- 4☽︎ Moon09:57 – 10:43
- 5♄︎ Saturn10:43 – 11:28
- 6♃︎ Jupiter11:28 – 12:14
- 7♂︎ Mars12:14 – 12:59
- 8☉︎ Sun12:59 – 13:45
- 9♀︎ Venus13:45 – 14:30
- 10☿︎ Mercury14:30 – 15:16
- 11☽︎ Moon15:16 – 16:02
- 12♄︎ Saturn16:02 – 16:47
Night
- 1♃︎ Jupiter16:47 – 18:01
- 2♂︎ Mars18:01 – 19:16
- 3☉︎ Sun19:16 – 20:30
- 4♀︎ Venus20:30 – 21:44
- 5☿︎ Mercury21:44 – 22:59
- 6☽︎ Moon22:59 – 00:13
- 7♄︎ Saturn00:13 – 01:27
- 8♃︎ Jupiter01:27 – 02:42
- 9♂︎ Mars02:42 – 03:56
- 10☉︎ Sun03:56 – 05:10
- 11♀︎ Venus05:10 – 06:24
- 12☿︎ Mercury06:24 – 07:39
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Sunday, 31 January 2027, the Sun rises at 07:40 and sets at 16:47: the day lasts 9h 07m, that is twelve day hours of 46 min. The night, until the next sunrise at 07:39, lasts 14h 52m: twelve night hours of 1h 14m.
Which planet rules the first hour that day?
The Sun, from 07:40 to 08:26: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.