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 Monday, 8 December 2025: day of the Moon
- Sunrise
- 08:02
- Sunset
- 16:01
- Next sunrise
- 08:03
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1☽︎ Moon08:02 – 08:42
- 2♄︎ Saturn08:42 – 09:22
- 3♃︎ Jupiter09:22 – 10:02
- 4♂︎ Mars10:02 – 10:42
- 5☉︎ Sun10:42 – 11:22
- 6♀︎ Venus11:22 – 12:02
- 7☿︎ Mercury12:02 – 12:42
- 8☽︎ Moon12:42 – 13:22
- 9♄︎ Saturn13:22 – 14:02
- 10♃︎ Jupiter14:02 – 14:42
- 11♂︎ Mars14:42 – 15:22
- 12☉︎ Sun15:22 – 16:01
Night
- 1♀︎ Venus16:01 – 17:22
- 2☿︎ Mercury17:22 – 18:42
- 3☽︎ Moon18:42 – 20:02
- 4♄︎ Saturn20:02 – 21:22
- 5♃︎ Jupiter21:22 – 22:42
- 6♂︎ Mars22:42 – 00:02
- 7☉︎ Sun00:02 – 01:22
- 8♀︎ Venus01:22 – 02:43
- 9☿︎ Mercury02:43 – 04:03
- 10☽︎ Moon04:03 – 05:23
- 11♄︎ Saturn05:23 – 06:43
- 12♃︎ Jupiter06:43 – 08:03
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Monday, 8 December 2025, the Sun rises at 08:02 and sets at 16:01: the day lasts 7h 59m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:03, lasts 16h 02m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
The Moon, from 08:02 to 08:42: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.