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, 29 July 2026: day of Mercury
- Sunrise
- 05:19
- Sunset
- 20:53
- Next sunrise
- 05:21
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:19 – 06:37
- 2☽︎ Moon06:37 – 07:55
- 3♄︎ Saturn07:55 – 09:13
- 4♃︎ Jupiter09:13 – 10:30
- 5♂︎ Mars10:30 – 11:48
- 6☉︎ Sun11:48 – 13:06
- 7♀︎ Venus13:06 – 14:24
- 8☿︎ Mercury14:24 – 15:42
- 9☽︎ Moon15:42 – 16:59
- 10♄︎ Saturn16:59 – 18:17
- 11♃︎ Jupiter18:17 – 19:35
- 12♂︎ Mars19:35 – 20:53
Night
- 1☉︎ Sun20:53 – 21:35
- 2♀︎ Venus21:35 – 22:18
- 3☿︎ Mercury22:18 – 23:00
- 4☽︎ Moon23:00 – 23:42
- 5♄︎ Saturn23:42 – 00:24
- 6♃︎ Jupiter00:24 – 01:07
- 7♂︎ Mars01:07 – 01:49
- 8☉︎ Sun01:49 – 02:31
- 9♀︎ Venus02:31 – 03:14
- 10☿︎ Mercury03:14 – 03:56
- 11☽︎ Moon03:56 – 04:38
- 12♄︎ Saturn04:38 – 05:21
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Wednesday, 29 July 2026, the Sun rises at 05:19 and sets at 20:53: the day lasts 15h 34m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 05:21, lasts 8h 28m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Mercury, from 05:19 to 06:37: 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.