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 Saturday, 19 December 2026: day of Saturn
- Sunrise
- 08:12
- Sunset
- 16:02
- Next sunrise
- 08:12
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1♄︎ Saturn08:12 – 08:51
- 2♃︎ Jupiter08:51 – 09:30
- 3♂︎ Mars09:30 – 10:09
- 4☉︎ Sun10:09 – 10:49
- 5♀︎ Venus10:49 – 11:28
- 6☿︎ Mercury11:28 – 12:07
- 7☽︎ Moon12:07 – 12:46
- 8♄︎ Saturn12:46 – 13:25
- 9♃︎ Jupiter13:25 – 14:05
- 10♂︎ Mars14:05 – 14:44
- 11☉︎ Sun14:44 – 15:23
- 12♀︎ Venus15:23 – 16:02
Night
- 1☿︎ Mercury16:02 – 17:23
- 2☽︎ Moon17:23 – 18:44
- 3♄︎ Saturn18:44 – 20:05
- 4♃︎ Jupiter20:05 – 21:26
- 5♂︎ Mars21:26 – 22:46
- 6☉︎ Sun22:46 – 00:07
- 7♀︎ Venus00:07 – 01:28
- 8☿︎ Mercury01:28 – 02:49
- 9☽︎ Moon02:49 – 04:10
- 10♄︎ Saturn04:10 – 05:31
- 11♃︎ Jupiter05:31 – 06:51
- 12♂︎ Mars06:51 – 08:12
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Saturday, 19 December 2026, the Sun rises at 08:12 and sets at 16:02: the day lasts 7h 50m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:12, lasts 16h 10m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Saturn, from 08:12 to 08:51: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.