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 Monday, 17 August 2026: day of the Moon
- Sunrise
- 05:49
- Sunset
- 20:19
- Next sunrise
- 05:50
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:49 – 07:01
- 2♄︎ Saturn07:01 – 08:14
- 3♃︎ Jupiter08:14 – 09:26
- 4♂︎ Mars09:26 – 10:39
- 5☉︎ Sun10:39 – 11:51
- 6♀︎ Venus11:51 – 13:04
- 7☿︎ Mercury13:04 – 14:16
- 8☽︎ Moon14:16 – 15:29
- 9♄︎ Saturn15:29 – 16:41
- 10♃︎ Jupiter16:41 – 17:54
- 11♂︎ Mars17:54 – 19:06
- 12☉︎ Sun19:06 – 20:19
Night
- 1♀︎ Venus20:19 – 21:06
- 2☿︎ Mercury21:06 – 21:54
- 3☽︎ Moon21:54 – 22:41
- 4♄︎ Saturn22:41 – 23:29
- 5♃︎ Jupiter23:29 – 00:17
- 6♂︎ Mars00:17 – 01:04
- 7☉︎ Sun01:04 – 01:52
- 8♀︎ Venus01:52 – 02:40
- 9☿︎ Mercury02:40 – 03:27
- 10☽︎ Moon03:27 – 04:15
- 11♄︎ Saturn04:15 – 05:03
- 12♃︎ Jupiter05:03 – 05:50
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Monday, 17 August 2026, the Sun rises at 05:49 and sets at 20:19: the day lasts 14h 30m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 05:50, lasts 9h 32m: twelve night hours of 48 min.
Which planet rules the first hour that day?
The Moon, from 05:49 to 07:01: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.