Planetary hours
in Cardiff.
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, 8 December 2026: day of Mars
- Sunrise
- 08:04
- Sunset
- 16:04
- Next sunrise
- 08:05
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♂︎ Mars08:04 – 08:44
- 2☉︎ Sun08:44 – 09:24
- 3♀︎ Venus09:24 – 10:04
- 4☿︎ Mercury10:04 – 10:44
- 5☽︎ Moon10:44 – 11:24
- 6♄︎ Saturn11:24 – 12:04
- 7♃︎ Jupiter12:04 – 12:44
- 8♂︎ Mars12:44 – 13:24
- 9☉︎ Sun13:24 – 14:04
- 10♀︎ Venus14:04 – 14:44
- 11☿︎ Mercury14:44 – 15:24
- 12☽︎ Moon15:24 – 16:04
Night
- 1♄︎ Saturn16:04 – 17:24
- 2♃︎ Jupiter17:24 – 18:44
- 3♂︎ Mars18:44 – 20:04
- 4☉︎ Sun20:04 – 21:24
- 5♀︎ Venus21:24 – 22:44
- 6☿︎ Mercury22:44 – 00:05
- 7☽︎ Moon00:05 – 01:25
- 8♄︎ Saturn01:25 – 02:45
- 9♃︎ Jupiter02:45 – 04:05
- 10♂︎ Mars04:05 – 05:25
- 11☉︎ Sun05:25 – 06:45
- 12♀︎ Venus06:45 – 08:05
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Tuesday, 8 December 2026, the Sun rises at 08:04 and sets at 16:04: the day lasts 7h 59m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:05, lasts 16h 02m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Mars, from 08:04 to 08:44: 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.