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 Friday, 4 December 2026: day of Venus
- Sunrise
- 07:59
- Sunset
- 16:05
- Next sunrise
- 08:01
A day hour lasts 40 min; a night hour, 1h 20m. Local time (Europe/London).
Day
- 1♀︎ Venus07:59 – 08:40
- 2☿︎ Mercury08:40 – 09:20
- 3☽︎ Moon09:20 – 10:01
- 4♄︎ Saturn10:01 – 10:41
- 5♃︎ Jupiter10:41 – 11:22
- 6♂︎ Mars11:22 – 12:02
- 7☉︎ Sun12:02 – 12:43
- 8♀︎ Venus12:43 – 13:23
- 9☿︎ Mercury13:23 – 14:04
- 10☽︎ Moon14:04 – 14:44
- 11♄︎ Saturn14:44 – 15:25
- 12♃︎ Jupiter15:25 – 16:05
Night
- 1♂︎ Mars16:05 – 17:25
- 2☉︎ Sun17:25 – 18:44
- 3♀︎ Venus18:44 – 20:04
- 4☿︎ Mercury20:04 – 21:24
- 5☽︎ Moon21:24 – 22:43
- 6♄︎ Saturn22:43 – 00:03
- 7♃︎ Jupiter00:03 – 01:23
- 8♂︎ Mars01:23 – 02:42
- 9☉︎ Sun02:42 – 04:02
- 10♀︎ Venus04:02 – 05:21
- 11☿︎ Mercury05:21 – 06:41
- 12☽︎ Moon06:41 – 08:01
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Friday, 4 December 2026, the Sun rises at 07:59 and sets at 16:05: the day lasts 8h 06m, that is twelve day hours of 40 min. The night, until the next sunrise at 08:01, lasts 15h 55m: twelve night hours of 1h 20m.
Which planet rules the first hour that day?
Venus, from 07:59 to 08:40: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.