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, 13 January 2026: day of Mars
- Sunrise
- 08:10
- Sunset
- 16:27
- Next sunrise
- 08:09
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/London).
Day
- 1♂︎ Mars08:10 – 08:52
- 2☉︎ Sun08:52 – 09:33
- 3♀︎ Venus09:33 – 10:14
- 4☿︎ Mercury10:14 – 10:56
- 5☽︎ Moon10:56 – 11:37
- 6♄︎ Saturn11:37 – 12:19
- 7♃︎ Jupiter12:19 – 13:00
- 8♂︎ Mars13:00 – 13:42
- 9☉︎ Sun13:42 – 14:23
- 10♀︎ Venus14:23 – 15:05
- 11☿︎ Mercury15:05 – 15:46
- 12☽︎ Moon15:46 – 16:27
Night
- 1♄︎ Saturn16:27 – 17:46
- 2♃︎ Jupiter17:46 – 19:04
- 3♂︎ Mars19:04 – 20:23
- 4☉︎ Sun20:23 – 21:41
- 5♀︎ Venus21:41 – 23:00
- 6☿︎ Mercury23:00 – 00:18
- 7☽︎ Moon00:18 – 01:37
- 8♄︎ Saturn01:37 – 02:55
- 9♃︎ Jupiter02:55 – 04:14
- 10♂︎ Mars04:14 – 05:32
- 11☉︎ Sun05:32 – 06:51
- 12♀︎ Venus06:51 – 08:09
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Tuesday, 13 January 2026, the Sun rises at 08:10 and sets at 16:27: the day lasts 8h 17m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:09, lasts 15h 42m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Mars, from 08:10 to 08:52: 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.