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 Wednesday, 13 May 2026: day of Mercury
- Sunrise
- 05:11
- Sunset
- 20:42
- Next sunrise
- 05:10
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:11 – 06:29
- 2☽︎ Moon06:29 – 07:47
- 3♄︎ Saturn07:47 – 09:04
- 4♃︎ Jupiter09:04 – 10:22
- 5♂︎ Mars10:22 – 11:39
- 6☉︎ Sun11:39 – 12:57
- 7♀︎ Venus12:57 – 14:14
- 8☿︎ Mercury14:14 – 15:32
- 9☽︎ Moon15:32 – 16:50
- 10♄︎ Saturn16:50 – 18:07
- 11♃︎ Jupiter18:07 – 19:25
- 12♂︎ Mars19:25 – 20:42
Night
- 1☉︎ Sun20:42 – 21:25
- 2♀︎ Venus21:25 – 22:07
- 3☿︎ Mercury22:07 – 22:49
- 4☽︎ Moon22:49 – 23:32
- 5♄︎ Saturn23:32 – 00:14
- 6♃︎ Jupiter00:14 – 00:56
- 7♂︎ Mars00:56 – 01:38
- 8☉︎ Sun01:38 – 02:21
- 9♀︎ Venus02:21 – 03:03
- 10☿︎ Mercury03:03 – 03:45
- 11☽︎ Moon03:45 – 04:28
- 12♄︎ Saturn04:28 – 05:10
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Wednesday, 13 May 2026, the Sun rises at 05:11 and sets at 20:42: the day lasts 15h 31m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 05:10, lasts 8h 27m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Mercury, from 05:11 to 06:29: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.