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 Sunday, 18 October 2026: day of the Sun
- Sunrise
- 07:29
- Sunset
- 18:01
- Next sunrise
- 07:31
A day hour lasts 53 min; a night hour, 1h 08m. Local time (Europe/London).
Day
- 1☉︎ Sun07:29 – 08:22
- 2♀︎ Venus08:22 – 09:14
- 3☿︎ Mercury09:14 – 10:07
- 4☽︎ Moon10:07 – 10:59
- 5♄︎ Saturn10:59 – 11:52
- 6♃︎ Jupiter11:52 – 12:45
- 7♂︎ Mars12:45 – 13:37
- 8☉︎ Sun13:37 – 14:30
- 9♀︎ Venus14:30 – 15:23
- 10☿︎ Mercury15:23 – 16:15
- 11☽︎ Moon16:15 – 17:08
- 12♄︎ Saturn17:08 – 18:01
Night
- 1♃︎ Jupiter18:01 – 19:08
- 2♂︎ Mars19:08 – 20:16
- 3☉︎ Sun20:16 – 21:23
- 4♀︎ Venus21:23 – 22:31
- 5☿︎ Mercury22:31 – 23:38
- 6☽︎ Moon23:38 – 00:46
- 7♄︎ Saturn00:46 – 01:53
- 8♃︎ Jupiter01:53 – 03:01
- 9♂︎ Mars03:01 – 04:08
- 10☉︎ Sun04:08 – 05:16
- 11♀︎ Venus05:16 – 06:23
- 12☿︎ Mercury06:23 – 07:31
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Sunday, 18 October 2026, the Sun rises at 07:29 and sets at 18:01: the day lasts 10h 32m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:31, lasts 13h 30m: twelve night hours of 1h 08m.
Which planet rules the first hour that day?
The Sun, from 07:29 to 08:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.