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 Tuesday, 8 September 2026: day of Mars
- Sunrise
- 06:24
- Sunset
- 19:31
- Next sunrise
- 06:25
A day hour lasts 1h 06m; a night hour, 55 min. Local time (Europe/London).
Day
- 1♂︎ Mars06:24 – 07:29
- 2☉︎ Sun07:29 – 08:35
- 3♀︎ Venus08:35 – 09:40
- 4☿︎ Mercury09:40 – 10:46
- 5☽︎ Moon10:46 – 11:52
- 6♄︎ Saturn11:52 – 12:57
- 7♃︎ Jupiter12:57 – 14:03
- 8♂︎ Mars14:03 – 15:08
- 9☉︎ Sun15:08 – 16:14
- 10♀︎ Venus16:14 – 17:20
- 11☿︎ Mercury17:20 – 18:25
- 12☽︎ Moon18:25 – 19:31
Night
- 1♄︎ Saturn19:31 – 20:25
- 2♃︎ Jupiter20:25 – 21:20
- 3♂︎ Mars21:20 – 22:14
- 4☉︎ Sun22:14 – 23:09
- 5♀︎ Venus23:09 – 00:03
- 6☿︎ Mercury00:03 – 00:58
- 7☽︎ Moon00:58 – 01:52
- 8♄︎ Saturn01:52 – 02:47
- 9♃︎ Jupiter02:47 – 03:42
- 10♂︎ Mars03:42 – 04:36
- 11☉︎ Sun04:36 – 05:31
- 12♀︎ Venus05:31 – 06:25
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Tuesday, 8 September 2026, the Sun rises at 06:24 and sets at 19:31: the day lasts 13h 07m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 06:25, lasts 10h 54m: twelve night hours of 55 min.
Which planet rules the first hour that day?
Mars, from 06:24 to 07:29: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.