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 Wednesday, 19 November 2025: day of Mercury
- Sunrise
- 07:37
- Sunset
- 16:18
- Next sunrise
- 07:39
A day hour lasts 43 min; a night hour, 1h 17m. Local time (Europe/London).
Day
- 1☿︎ Mercury07:37 – 08:21
- 2☽︎ Moon08:21 – 09:04
- 3♄︎ Saturn09:04 – 09:47
- 4♃︎ Jupiter09:47 – 10:31
- 5♂︎ Mars10:31 – 11:14
- 6☉︎ Sun11:14 – 11:57
- 7♀︎ Venus11:57 – 12:41
- 8☿︎ Mercury12:41 – 13:24
- 9☽︎ Moon13:24 – 14:07
- 10♄︎ Saturn14:07 – 14:51
- 11♃︎ Jupiter14:51 – 15:34
- 12♂︎ Mars15:34 – 16:18
Night
- 1☉︎ Sun16:18 – 17:34
- 2♀︎ Venus17:34 – 18:51
- 3☿︎ Mercury18:51 – 20:08
- 4☽︎ Moon20:08 – 21:25
- 5♄︎ Saturn21:25 – 22:41
- 6♃︎ Jupiter22:41 – 23:58
- 7♂︎ Mars23:58 – 01:15
- 8☉︎ Sun01:15 – 02:32
- 9♀︎ Venus02:32 – 03:49
- 10☿︎ Mercury03:49 – 05:05
- 11☽︎ Moon05:05 – 06:22
- 12♄︎ Saturn06:22 – 07:39
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Wednesday, 19 November 2025, the Sun rises at 07:37 and sets at 16:18: the day lasts 8h 40m, that is twelve day hours of 43 min. The night, until the next sunrise at 07:39, lasts 15h 21m: twelve night hours of 1h 17m.
Which planet rules the first hour that day?
Mercury, from 07:37 to 08:21: 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.