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, 21 July 2026: day of Mars
- Sunrise
- 05:08
- Sunset
- 21:04
- Next sunrise
- 05:09
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:08 – 06:28
- 2☉︎ Sun06:28 – 07:47
- 3♀︎ Venus07:47 – 09:07
- 4☿︎ Mercury09:07 – 10:27
- 5☽︎ Moon10:27 – 11:46
- 6♄︎ Saturn11:46 – 13:06
- 7♃︎ Jupiter13:06 – 14:26
- 8♂︎ Mars14:26 – 15:45
- 9☉︎ Sun15:45 – 17:05
- 10♀︎ Venus17:05 – 18:25
- 11☿︎ Mercury18:25 – 19:44
- 12☽︎ Moon19:44 – 21:04
Night
- 1♄︎ Saturn21:04 – 21:45
- 2♃︎ Jupiter21:45 – 22:25
- 3♂︎ Mars22:25 – 23:05
- 4☉︎ Sun23:05 – 23:46
- 5♀︎ Venus23:46 – 00:26
- 6☿︎ Mercury00:26 – 01:07
- 7☽︎ Moon01:07 – 01:47
- 8♄︎ Saturn01:47 – 02:28
- 9♃︎ Jupiter02:28 – 03:08
- 10♂︎ Mars03:08 – 03:48
- 11☉︎ Sun03:48 – 04:29
- 12♀︎ Venus04:29 – 05:09
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Tuesday, 21 July 2026, the Sun rises at 05:08 and sets at 21:04: the day lasts 15h 56m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 05:09, lasts 8h 05m: twelve night hours of 40 min.
Which planet rules the first hour that day?
Mars, from 05:08 to 06:28: 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.