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 Saturday, 25 July 2026: day of Saturn
- Sunrise
- 05:13
- Sunset
- 20:59
- Next sunrise
- 05:15
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/London).
Day
- 1♄︎ Saturn05:13 – 06:32
- 2♃︎ Jupiter06:32 – 07:51
- 3♂︎ Mars07:51 – 09:10
- 4☉︎ Sun09:10 – 10:29
- 5♀︎ Venus10:29 – 11:47
- 6☿︎ Mercury11:47 – 13:06
- 7☽︎ Moon13:06 – 14:25
- 8♄︎ Saturn14:25 – 15:44
- 9♃︎ Jupiter15:44 – 17:02
- 10♂︎ Mars17:02 – 18:21
- 11☉︎ Sun18:21 – 19:40
- 12♀︎ Venus19:40 – 20:59
Night
- 1☿︎ Mercury20:59 – 21:40
- 2☽︎ Moon21:40 – 22:21
- 3♄︎ Saturn22:21 – 23:03
- 4♃︎ Jupiter23:03 – 23:44
- 5♂︎ Mars23:44 – 00:25
- 6☉︎ Sun00:25 – 01:07
- 7♀︎ Venus01:07 – 01:48
- 8☿︎ Mercury01:48 – 02:29
- 9☽︎ Moon02:29 – 03:11
- 10♄︎ Saturn03:11 – 03:52
- 11♃︎ Jupiter03:52 – 04:34
- 12♂︎ Mars04:34 – 05:15
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Saturday, 25 July 2026, the Sun rises at 05:13 and sets at 20:59: the day lasts 15h 45m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 05:15, lasts 8h 16m: twelve night hours of 41 min.
Which planet rules the first hour that day?
Saturn, from 05:13 to 06:32: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.