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 Sunday, 7 December 2025: day of the Sun
- Sunrise
- 08:01
- Sunset
- 16:02
- Next sunrise
- 08:02
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1☉︎ Sun08:01 – 08:41
- 2♀︎ Venus08:41 – 09:21
- 3☿︎ Mercury09:21 – 10:01
- 4☽︎ Moon10:01 – 10:41
- 5♄︎ Saturn10:41 – 11:21
- 6♃︎ Jupiter11:21 – 12:01
- 7♂︎ Mars12:01 – 12:41
- 8☉︎ Sun12:41 – 13:21
- 9♀︎ Venus13:21 – 14:02
- 10☿︎ Mercury14:02 – 14:42
- 11☽︎ Moon14:42 – 15:22
- 12♄︎ Saturn15:22 – 16:02
Night
- 1♃︎ Jupiter16:02 – 17:22
- 2♂︎ Mars17:22 – 18:42
- 3☉︎ Sun18:42 – 20:02
- 4♀︎ Venus20:02 – 21:22
- 5☿︎ Mercury21:22 – 22:42
- 6☽︎ Moon22:42 – 00:02
- 7♄︎ Saturn00:02 – 01:22
- 8♃︎ Jupiter01:22 – 02:42
- 9♂︎ Mars02:42 – 04:02
- 10☉︎ Sun04:02 – 05:22
- 11♀︎ Venus05:22 – 06:42
- 12☿︎ Mercury06:42 – 08:02
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Sunday, 7 December 2025, the Sun rises at 08:01 and sets at 16:02: the day lasts 8h 01m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:02, lasts 16h 00m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
The Sun, from 08:01 to 08:41: 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.