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, 27 May 2026: day of Mercury
- Sunrise
- 04:53
- Sunset
- 21:02
- Next sunrise
- 04:52
A day hour lasts 1h 21m; a night hour, 39 min. Local time (Europe/London).
Day
- 1☿︎ Mercury04:53 – 06:14
- 2☽︎ Moon06:14 – 07:35
- 3♄︎ Saturn07:35 – 08:55
- 4♃︎ Jupiter08:55 – 10:16
- 5♂︎ Mars10:16 – 11:37
- 6☉︎ Sun11:37 – 12:58
- 7♀︎ Venus12:58 – 14:18
- 8☿︎ Mercury14:18 – 15:39
- 9☽︎ Moon15:39 – 17:00
- 10♄︎ Saturn17:00 – 18:21
- 11♃︎ Jupiter18:21 – 19:41
- 12♂︎ Mars19:41 – 21:02
Night
- 1☉︎ Sun21:02 – 21:41
- 2♀︎ Venus21:41 – 22:20
- 3☿︎ Mercury22:20 – 23:00
- 4☽︎ Moon23:00 – 23:39
- 5♄︎ Saturn23:39 – 00:18
- 6♃︎ Jupiter00:18 – 00:57
- 7♂︎ Mars00:57 – 01:36
- 8☉︎ Sun01:36 – 02:15
- 9♀︎ Venus02:15 – 02:55
- 10☿︎ Mercury02:55 – 03:34
- 11☽︎ Moon03:34 – 04:13
- 12♄︎ Saturn04:13 – 04:52
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Wednesday, 27 May 2026, the Sun rises at 04:53 and sets at 21:02: the day lasts 16h 09m, that is twelve day hours of 1h 21m. The night, until the next sunrise at 04:52, lasts 7h 50m: twelve night hours of 39 min.
Which planet rules the first hour that day?
Mercury, from 04:53 to 06:14: 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.