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, 6 January 2026: day of Mars
- Sunrise
- 08:04
- Sunset
- 16:08
- Next sunrise
- 08:04
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♂︎ Mars08:04 – 08:45
- 2☉︎ Sun08:45 – 09:25
- 3♀︎ Venus09:25 – 10:05
- 4☿︎ Mercury10:05 – 10:45
- 5☽︎ Moon10:45 – 11:26
- 6♄︎ Saturn11:26 – 12:06
- 7♃︎ Jupiter12:06 – 12:46
- 8♂︎ Mars12:46 – 13:27
- 9☉︎ Sun13:27 – 14:07
- 10♀︎ Venus14:07 – 14:47
- 11☿︎ Mercury14:47 – 15:27
- 12☽︎ Moon15:27 – 16:08
Night
- 1♄︎ Saturn16:08 – 17:27
- 2♃︎ Jupiter17:27 – 18:47
- 3♂︎ Mars18:47 – 20:07
- 4☉︎ Sun20:07 – 21:26
- 5♀︎ Venus21:26 – 22:46
- 6☿︎ Mercury22:46 – 00:06
- 7☽︎ Moon00:06 – 01:26
- 8♄︎ Saturn01:26 – 02:45
- 9♃︎ Jupiter02:45 – 04:05
- 10♂︎ Mars04:05 – 05:25
- 11☉︎ Sun05:25 – 06:44
- 12♀︎ Venus06:44 – 08:04
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Tuesday, 6 January 2026, the Sun rises at 08:04 and sets at 16:08: the day lasts 8h 03m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:04, lasts 15h 57m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Mars, from 08:04 to 08:45: 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.