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, 4 February 2026: day of Mercury
- Sunrise
- 07:34
- Sunset
- 16:55
- Next sunrise
- 07:32
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Europe/London).
Day
- 1☿︎ Mercury07:34 – 08:20
- 2☽︎ Moon08:20 – 09:07
- 3♄︎ Saturn09:07 – 09:54
- 4♃︎ Jupiter09:54 – 10:41
- 5♂︎ Mars10:41 – 11:27
- 6☉︎ Sun11:27 – 12:14
- 7♀︎ Venus12:14 – 13:01
- 8☿︎ Mercury13:01 – 13:48
- 9☽︎ Moon13:48 – 14:35
- 10♄︎ Saturn14:35 – 15:21
- 11♃︎ Jupiter15:21 – 16:08
- 12♂︎ Mars16:08 – 16:55
Night
- 1☉︎ Sun16:55 – 18:08
- 2♀︎ Venus18:08 – 19:21
- 3☿︎ Mercury19:21 – 20:34
- 4☽︎ Moon20:34 – 21:47
- 5♄︎ Saturn21:47 – 23:00
- 6♃︎ Jupiter23:00 – 00:13
- 7♂︎ Mars00:13 – 01:27
- 8☉︎ Sun01:27 – 02:40
- 9♀︎ Venus02:40 – 03:53
- 10☿︎ Mercury03:53 – 05:06
- 11☽︎ Moon05:06 – 06:19
- 12♄︎ Saturn06:19 – 07:32
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Wednesday, 4 February 2026, the Sun rises at 07:34 and sets at 16:55: the day lasts 9h 21m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:32, lasts 14h 37m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Mercury, from 07:34 to 08:20: 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.