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 Friday, 5 December 2025: day of Venus
- Sunrise
- 07:59
- Sunset
- 16:02
- Next sunrise
- 08:00
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♀︎ Venus07:59 – 08:39
- 2☿︎ Mercury08:39 – 09:19
- 3☽︎ Moon09:19 – 09:59
- 4♄︎ Saturn09:59 – 10:40
- 5♃︎ Jupiter10:40 – 11:20
- 6♂︎ Mars11:20 – 12:00
- 7☉︎ Sun12:00 – 12:41
- 8♀︎ Venus12:41 – 13:21
- 9☿︎ Mercury13:21 – 14:01
- 10☽︎ Moon14:01 – 14:42
- 11♄︎ Saturn14:42 – 15:22
- 12♃︎ Jupiter15:22 – 16:02
Night
- 1♂︎ Mars16:02 – 17:22
- 2☉︎ Sun17:22 – 18:42
- 3♀︎ Venus18:42 – 20:02
- 4☿︎ Mercury20:02 – 21:22
- 5☽︎ Moon21:22 – 22:41
- 6♄︎ Saturn22:41 – 00:01
- 7♃︎ Jupiter00:01 – 01:21
- 8♂︎ Mars01:21 – 02:41
- 9☉︎ Sun02:41 – 04:00
- 10♀︎ Venus04:00 – 05:20
- 11☿︎ Mercury05:20 – 06:40
- 12☽︎ Moon06:40 – 08:00
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Friday, 5 December 2025, the Sun rises at 07:59 and sets at 16:02: the day lasts 8h 04m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:00, lasts 15h 57m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Venus, from 07:59 to 08:39: 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.