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, 29 December 2025: day of the Moon
- Sunrise
- 08:15
- Sunset
- 16:09
- Next sunrise
- 08:15
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1☽︎ Moon08:15 – 08:55
- 2♄︎ Saturn08:55 – 09:34
- 3♃︎ Jupiter09:34 – 10:14
- 4♂︎ Mars10:14 – 10:53
- 5☉︎ Sun10:53 – 11:33
- 6♀︎ Venus11:33 – 12:12
- 7☿︎ Mercury12:12 – 12:52
- 8☽︎ Moon12:52 – 13:31
- 9♄︎ Saturn13:31 – 14:10
- 10♃︎ Jupiter14:10 – 14:50
- 11♂︎ Mars14:50 – 15:29
- 12☉︎ Sun15:29 – 16:09
Night
- 1♀︎ Venus16:09 – 17:29
- 2☿︎ Mercury17:29 – 18:50
- 3☽︎ Moon18:50 – 20:11
- 4♄︎ Saturn20:11 – 21:31
- 5♃︎ Jupiter21:31 – 22:52
- 6♂︎ Mars22:52 – 00:12
- 7☉︎ Sun00:12 – 01:33
- 8♀︎ Venus01:33 – 02:53
- 9☿︎ Mercury02:53 – 04:14
- 10☽︎ Moon04:14 – 05:34
- 11♄︎ Saturn05:34 – 06:55
- 12♃︎ Jupiter06:55 – 08:15
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Monday, 29 December 2025, the Sun rises at 08:15 and sets at 16:09: the day lasts 7h 54m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:15, lasts 16h 06m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
The Moon, from 08:15 to 08:55: 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.