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 Thursday, 20 November 2025: day of Jupiter
- Sunrise
- 07:39
- Sunset
- 16:16
- Next sunrise
- 07:40
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/London).
Day
- 1♃︎ Jupiter07:39 – 08:22
- 2♂︎ Mars08:22 – 09:05
- 3☉︎ Sun09:05 – 09:48
- 4♀︎ Venus09:48 – 10:31
- 5☿︎ Mercury10:31 – 11:15
- 6☽︎ Moon11:15 – 11:58
- 7♄︎ Saturn11:58 – 12:41
- 8♃︎ Jupiter12:41 – 13:24
- 9♂︎ Mars13:24 – 14:07
- 10☉︎ Sun14:07 – 14:50
- 11♀︎ Venus14:50 – 15:33
- 12☿︎ Mercury15:33 – 16:16
Night
- 1☽︎ Moon16:16 – 17:33
- 2♄︎ Saturn17:33 – 18:50
- 3♃︎ Jupiter18:50 – 20:07
- 4♂︎ Mars20:07 – 21:24
- 5☉︎ Sun21:24 – 22:41
- 6♀︎ Venus22:41 – 23:58
- 7☿︎ Mercury23:58 – 01:15
- 8☽︎ Moon01:15 – 02:32
- 9♄︎ Saturn02:32 – 03:49
- 10♃︎ Jupiter03:49 – 05:06
- 11♂︎ Mars05:06 – 06:23
- 12☉︎ Sun06:23 – 07:40
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Thursday, 20 November 2025, the Sun rises at 07:39 and sets at 16:16: the day lasts 8h 38m, that is twelve day hours of 43 min. The night, until the next sunrise at 07:40, lasts 15h 24m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
Jupiter, from 07:39 to 08:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.