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, 28 January 2027: day of Jupiter
- Sunrise
- 07:45
- Sunset
- 16:42
- Next sunrise
- 07:43
A day hour lasts 45 min; a night hour, 1h 15m. Local time (Europe/London).
Day
- 1♃︎ Jupiter07:45 – 08:29
- 2♂︎ Mars08:29 – 09:14
- 3☉︎ Sun09:14 – 09:59
- 4♀︎ Venus09:59 – 10:44
- 5☿︎ Mercury10:44 – 11:28
- 6☽︎ Moon11:28 – 12:13
- 7♄︎ Saturn12:13 – 12:58
- 8♃︎ Jupiter12:58 – 13:43
- 9♂︎ Mars13:43 – 14:28
- 10☉︎ Sun14:28 – 15:12
- 11♀︎ Venus15:12 – 15:57
- 12☿︎ Mercury15:57 – 16:42
Night
- 1☽︎ Moon16:42 – 17:57
- 2♄︎ Saturn17:57 – 19:12
- 3♃︎ Jupiter19:12 – 20:27
- 4♂︎ Mars20:27 – 21:42
- 5☉︎ Sun21:42 – 22:57
- 6♀︎ Venus22:57 – 00:12
- 7☿︎ Mercury00:12 – 01:28
- 8☽︎ Moon01:28 – 02:43
- 9♄︎ Saturn02:43 – 03:58
- 10♃︎ Jupiter03:58 – 05:13
- 11♂︎ Mars05:13 – 06:28
- 12☉︎ Sun06:28 – 07:43
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Thursday, 28 January 2027, the Sun rises at 07:45 and sets at 16:42: the day lasts 8h 57m, that is twelve day hours of 45 min. The night, until the next sunrise at 07:43, lasts 15h 01m: twelve night hours of 1h 15m.
Which planet rules the first hour that day?
Jupiter, from 07:45 to 08:29: 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.