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, 17 October 2026: day of Saturn
- Sunrise
- 07:37
- Sunset
- 18:13
- Next sunrise
- 07:39
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/London).
Day
- 1♄︎ Saturn07:37 – 08:30
- 2♃︎ Jupiter08:30 – 09:23
- 3♂︎ Mars09:23 – 10:16
- 4☉︎ Sun10:16 – 11:09
- 5♀︎ Venus11:09 – 12:02
- 6☿︎ Mercury12:02 – 12:55
- 7☽︎ Moon12:55 – 13:48
- 8♄︎ Saturn13:48 – 14:41
- 9♃︎ Jupiter14:41 – 15:34
- 10♂︎ Mars15:34 – 16:27
- 11☉︎ Sun16:27 – 17:20
- 12♀︎ Venus17:20 – 18:13
Night
- 1☿︎ Mercury18:13 – 19:20
- 2☽︎ Moon19:20 – 20:27
- 3♄︎ Saturn20:27 – 21:34
- 4♃︎ Jupiter21:34 – 22:41
- 5♂︎ Mars22:41 – 23:48
- 6☉︎ Sun23:48 – 00:56
- 7♀︎ Venus00:56 – 02:03
- 8☿︎ Mercury02:03 – 03:10
- 9☽︎ Moon03:10 – 04:17
- 10♄︎ Saturn04:17 – 05:24
- 11♃︎ Jupiter05:24 – 06:32
- 12♂︎ Mars06:32 – 07:39
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Saturday, 17 October 2026, the Sun rises at 07:37 and sets at 18:13: the day lasts 10h 35m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:39, lasts 13h 26m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Saturn, from 07:37 to 08:30: 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.