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 Tuesday, 11 August 2026: day of Mars
- Sunrise
- 05:39
- Sunset
- 20:30
- Next sunrise
- 05:41
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:39 – 06:53
- 2☉︎ Sun06:53 – 08:08
- 3♀︎ Venus08:08 – 09:22
- 4☿︎ Mercury09:22 – 10:36
- 5☽︎ Moon10:36 – 11:50
- 6♄︎ Saturn11:50 – 13:05
- 7♃︎ Jupiter13:05 – 14:19
- 8♂︎ Mars14:19 – 15:33
- 9☉︎ Sun15:33 – 16:48
- 10♀︎ Venus16:48 – 18:02
- 11☿︎ Mercury18:02 – 19:16
- 12☽︎ Moon19:16 – 20:30
Night
- 1♄︎ Saturn20:30 – 21:16
- 2♃︎ Jupiter21:16 – 22:02
- 3♂︎ Mars22:02 – 22:48
- 4☉︎ Sun22:48 – 23:34
- 5♀︎ Venus23:34 – 00:20
- 6☿︎ Mercury00:20 – 01:05
- 7☽︎ Moon01:05 – 01:51
- 8♄︎ Saturn01:51 – 02:37
- 9♃︎ Jupiter02:37 – 03:23
- 10♂︎ Mars03:23 – 04:09
- 11☉︎ Sun04:09 – 04:55
- 12♀︎ Venus04:55 – 05:41
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Tuesday, 11 August 2026, the Sun rises at 05:39 and sets at 20:30: the day lasts 14h 51m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:41, lasts 9h 10m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mars, from 05:39 to 06:53: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.