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 Tuesday, 15 December 2026: day of Mars
- Sunrise
- 08:09
- Sunset
- 16:01
- Next sunrise
- 08:10
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1♂︎ Mars08:09 – 08:48
- 2☉︎ Sun08:48 – 09:28
- 3♀︎ Venus09:28 – 10:07
- 4☿︎ Mercury10:07 – 10:46
- 5☽︎ Moon10:46 – 11:26
- 6♄︎ Saturn11:26 – 12:05
- 7♃︎ Jupiter12:05 – 12:44
- 8♂︎ Mars12:44 – 13:24
- 9☉︎ Sun13:24 – 14:03
- 10♀︎ Venus14:03 – 14:42
- 11☿︎ Mercury14:42 – 15:22
- 12☽︎ Moon15:22 – 16:01
Night
- 1♄︎ Saturn16:01 – 17:22
- 2♃︎ Jupiter17:22 – 18:43
- 3♂︎ Mars18:43 – 20:03
- 4☉︎ Sun20:03 – 21:24
- 5♀︎ Venus21:24 – 22:45
- 6☿︎ Mercury22:45 – 00:05
- 7☽︎ Moon00:05 – 01:26
- 8♄︎ Saturn01:26 – 02:47
- 9♃︎ Jupiter02:47 – 04:07
- 10♂︎ Mars04:07 – 05:28
- 11☉︎ Sun05:28 – 06:49
- 12♀︎ Venus06:49 – 08:10
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Tuesday, 15 December 2026, the Sun rises at 08:09 and sets at 16:01: the day lasts 7h 52m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:10, lasts 16h 08m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mars, from 08:09 to 08:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.