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 Thursday, 18 June 2026: day of Jupiter
- Sunrise
- 04:42
- Sunset
- 21:20
- Next sunrise
- 04:42
A day hour lasts 1h 23m; a night hour, 37 min. Local time (Europe/London).
Day
- 1♃︎ Jupiter04:42 – 06:05
- 2♂︎ Mars06:05 – 07:29
- 3☉︎ Sun07:29 – 08:52
- 4♀︎ Venus08:52 – 10:15
- 5☿︎ Mercury10:15 – 11:38
- 6☽︎ Moon11:38 – 13:01
- 7♄︎ Saturn13:01 – 14:24
- 8♃︎ Jupiter14:24 – 15:48
- 9♂︎ Mars15:48 – 17:11
- 10☉︎ Sun17:11 – 18:34
- 11♀︎ Venus18:34 – 19:57
- 12☿︎ Mercury19:57 – 21:20
Night
- 1☽︎ Moon21:20 – 21:57
- 2♄︎ Saturn21:57 – 22:34
- 3♃︎ Jupiter22:34 – 23:11
- 4♂︎ Mars23:11 – 23:48
- 5☉︎ Sun23:48 – 00:24
- 6♀︎ Venus00:24 – 01:01
- 7☿︎ Mercury01:01 – 01:38
- 8☽︎ Moon01:38 – 02:15
- 9♄︎ Saturn02:15 – 02:52
- 10♃︎ Jupiter02:52 – 03:29
- 11♂︎ Mars03:29 – 04:05
- 12☉︎ Sun04:05 – 04:42
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Thursday, 18 June 2026, the Sun rises at 04:42 and sets at 21:20: the day lasts 16h 38m, that is twelve day hours of 1h 23m. The night, until the next sunrise at 04:42, lasts 7h 22m: twelve night hours of 37 min.
Which planet rules the first hour that day?
Jupiter, from 04:42 to 06:05: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.