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, 17 September 2026: day of Jupiter
- Sunrise
- 06:38
- Sunset
- 19:10
- Next sunrise
- 06:40
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Europe/London).
Day
- 1♃︎ Jupiter06:38 – 07:41
- 2♂︎ Mars07:41 – 08:43
- 3☉︎ Sun08:43 – 09:46
- 4♀︎ Venus09:46 – 10:49
- 5☿︎ Mercury10:49 – 11:51
- 6☽︎ Moon11:51 – 12:54
- 7♄︎ Saturn12:54 – 13:57
- 8♃︎ Jupiter13:57 – 14:59
- 9♂︎ Mars14:59 – 16:02
- 10☉︎ Sun16:02 – 17:05
- 11♀︎ Venus17:05 – 18:07
- 12☿︎ Mercury18:07 – 19:10
Night
- 1☽︎ Moon19:10 – 20:08
- 2♄︎ Saturn20:08 – 21:05
- 3♃︎ Jupiter21:05 – 22:02
- 4♂︎ Mars22:02 – 23:00
- 5☉︎ Sun23:00 – 23:57
- 6♀︎ Venus23:57 – 00:55
- 7☿︎ Mercury00:55 – 01:52
- 8☽︎ Moon01:52 – 02:50
- 9♄︎ Saturn02:50 – 03:47
- 10♃︎ Jupiter03:47 – 04:45
- 11♂︎ Mars04:45 – 05:42
- 12☉︎ Sun05:42 – 06:40
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Thursday, 17 September 2026, the Sun rises at 06:38 and sets at 19:10: the day lasts 12h 32m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 06:40, lasts 11h 29m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Jupiter, from 06:38 to 07:41: 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.