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 Wednesday, 13 August 2025: day of Mercury
- Sunrise
- 05:53
- Sunset
- 20:36
- Next sunrise
- 05:54
A day hour lasts 1h 14m; a night hour, 47 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:53 – 07:06
- 2☽︎ Moon07:06 – 08:20
- 3♄︎ Saturn08:20 – 09:33
- 4♃︎ Jupiter09:33 – 10:47
- 5♂︎ Mars10:47 – 12:01
- 6☉︎ Sun12:01 – 13:14
- 7♀︎ Venus13:14 – 14:28
- 8☿︎ Mercury14:28 – 15:41
- 9☽︎ Moon15:41 – 16:55
- 10♄︎ Saturn16:55 – 18:09
- 11♃︎ Jupiter18:09 – 19:22
- 12♂︎ Mars19:22 – 20:36
Night
- 1☉︎ Sun20:36 – 21:22
- 2♀︎ Venus21:22 – 22:09
- 3☿︎ Mercury22:09 – 22:55
- 4☽︎ Moon22:55 – 23:42
- 5♄︎ Saturn23:42 – 00:28
- 6♃︎ Jupiter00:28 – 01:15
- 7♂︎ Mars01:15 – 02:02
- 8☉︎ Sun02:02 – 02:48
- 9♀︎ Venus02:48 – 03:35
- 10☿︎ Mercury03:35 – 04:21
- 11☽︎ Moon04:21 – 05:08
- 12♄︎ Saturn05:08 – 05:54
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Wednesday, 13 August 2025, the Sun rises at 05:53 and sets at 20:36: the day lasts 14h 43m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:54, lasts 9h 18m: twelve night hours of 47 min.
Which planet rules the first hour that day?
Mercury, from 05:53 to 07:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.