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, 17 January 2027: day of the Sun
- Sunrise
- 07:57
- Sunset
- 16:23
- Next sunrise
- 07:56
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/London).
Day
- 1☉︎ Sun07:57 – 08:40
- 2♀︎ Venus08:40 – 09:22
- 3☿︎ Mercury09:22 – 10:04
- 4☽︎ Moon10:04 – 10:46
- 5♄︎ Saturn10:46 – 11:28
- 6♃︎ Jupiter11:28 – 12:10
- 7♂︎ Mars12:10 – 12:52
- 8☉︎ Sun12:52 – 13:35
- 9♀︎ Venus13:35 – 14:17
- 10☿︎ Mercury14:17 – 14:59
- 11☽︎ Moon14:59 – 15:41
- 12♄︎ Saturn15:41 – 16:23
Night
- 1♃︎ Jupiter16:23 – 17:41
- 2♂︎ Mars17:41 – 18:59
- 3☉︎ Sun18:59 – 20:16
- 4♀︎ Venus20:16 – 21:34
- 5☿︎ Mercury21:34 – 22:52
- 6☽︎ Moon22:52 – 00:10
- 7♄︎ Saturn00:10 – 01:28
- 8♃︎ Jupiter01:28 – 02:45
- 9♂︎ Mars02:45 – 04:03
- 10☉︎ Sun04:03 – 05:21
- 11♀︎ Venus05:21 – 06:39
- 12☿︎ Mercury06:39 – 07:56
Other cities · United Kingdom
Questions
How are the planetary hours calculated in London?
On Sunday, 17 January 2027, the Sun rises at 07:57 and sets at 16:23: the day lasts 8h 26m, that is twelve day hours of 42 min. The night, until the next sunrise at 07:56, lasts 15h 33m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
The Sun, from 07:57 to 08:40: 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.