Planetary hours
in Bristol.
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 Wednesday, 16 December 2026: day of Mercury
- Sunrise
- 08:10
- Sunset
- 16:01
- Next sunrise
- 08:10
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1☿︎ Mercury08:10 – 08:49
- 2☽︎ Moon08:49 – 09:28
- 3♄︎ Saturn09:28 – 10:08
- 4♃︎ Jupiter10:08 – 10:47
- 5♂︎ Mars10:47 – 11:26
- 6☉︎ Sun11:26 – 12:05
- 7♀︎ Venus12:05 – 12:45
- 8☿︎ Mercury12:45 – 13:24
- 9☽︎ Moon13:24 – 14:03
- 10♄︎ Saturn14:03 – 14:43
- 11♃︎ Jupiter14:43 – 15:22
- 12♂︎ Mars15:22 – 16:01
Night
- 1☉︎ Sun16:01 – 17:22
- 2♀︎ Venus17:22 – 18:43
- 3☿︎ Mercury18:43 – 20:04
- 4☽︎ Moon20:04 – 21:24
- 5♄︎ Saturn21:24 – 22:45
- 6♃︎ Jupiter22:45 – 00:06
- 7♂︎ Mars00:06 – 01:27
- 8☉︎ Sun01:27 – 02:47
- 9♀︎ Venus02:47 – 04:08
- 10☿︎ Mercury04:08 – 05:29
- 11☽︎ Moon05:29 – 06:50
- 12♄︎ Saturn06:50 – 08:10
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Wednesday, 16 December 2026, the Sun rises at 08:10 and sets at 16:01: the day lasts 7h 52m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:10, lasts 16h 09m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mercury, from 08:10 to 08:49: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.