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 Friday, 16 January 2026: day of Venus
- Sunrise
- 07:58
- Sunset
- 16:22
- Next sunrise
- 07:57
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/London).
Day
- 1♀︎ Venus07:58 – 08:40
- 2☿︎ Mercury08:40 – 09:22
- 3☽︎ Moon09:22 – 10:04
- 4♄︎ Saturn10:04 – 10:46
- 5♃︎ Jupiter10:46 – 11:28
- 6♂︎ Mars11:28 – 12:10
- 7☉︎ Sun12:10 – 12:52
- 8♀︎ Venus12:52 – 13:34
- 9☿︎ Mercury13:34 – 14:16
- 10☽︎ Moon14:16 – 14:58
- 11♄︎ Saturn14:58 – 15:40
- 12♃︎ Jupiter15:40 – 16:22
Night
- 1♂︎ Mars16:22 – 17:40
- 2☉︎ Sun17:40 – 18:58
- 3♀︎ Venus18:58 – 20:16
- 4☿︎ Mercury20:16 – 21:34
- 5☽︎ Moon21:34 – 22:52
- 6♄︎ Saturn22:52 – 00:10
- 7♃︎ Jupiter00:10 – 01:27
- 8♂︎ Mars01:27 – 02:45
- 9☉︎ Sun02:45 – 04:03
- 10♀︎ Venus04:03 – 05:21
- 11☿︎ Mercury05:21 – 06:39
- 12☽︎ Moon06:39 – 07:57
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Friday, 16 January 2026, the Sun rises at 07:58 and sets at 16:22: the day lasts 8h 24m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:57, lasts 15h 35m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Venus, from 07:58 to 08:40: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.