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, 18 August 2026: day of Mars
- Sunrise
- 06:00
- Sunset
- 20:26
- Next sunrise
- 06:02
A day hour lasts 1h 12m; a night hour, 48 min. Local time (Europe/London).
Day
- 1♂︎ Mars06:00 – 07:12
- 2☉︎ Sun07:12 – 08:25
- 3♀︎ Venus08:25 – 09:37
- 4☿︎ Mercury09:37 – 10:49
- 5☽︎ Moon10:49 – 12:01
- 6♄︎ Saturn12:01 – 13:13
- 7♃︎ Jupiter13:13 – 14:25
- 8♂︎ Mars14:25 – 15:38
- 9☉︎ Sun15:38 – 16:50
- 10♀︎ Venus16:50 – 18:02
- 11☿︎ Mercury18:02 – 19:14
- 12☽︎ Moon19:14 – 20:26
Night
- 1♄︎ Saturn20:26 – 21:14
- 2♃︎ Jupiter21:14 – 22:02
- 3♂︎ Mars22:02 – 22:50
- 4☉︎ Sun22:50 – 23:38
- 5♀︎ Venus23:38 – 00:26
- 6☿︎ Mercury00:26 – 01:14
- 7☽︎ Moon01:14 – 02:02
- 8♄︎ Saturn02:02 – 02:50
- 9♃︎ Jupiter02:50 – 03:38
- 10♂︎ Mars03:38 – 04:26
- 11☉︎ Sun04:26 – 05:14
- 12♀︎ Venus05:14 – 06:02
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Bristol?
On Tuesday, 18 August 2026, the Sun rises at 06:00 and sets at 20:26: the day lasts 14h 26m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 06:02, lasts 9h 36m: twelve night hours of 48 min.
Which planet rules the first hour that day?
Mars, from 06:00 to 07:12: 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.