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 Saturday, 25 October 2025: day of Saturn
- Sunrise
- 07:54
- Sunset
- 17:58
- Next sunrise
- 06:55
A day hour lasts 50 min; a night hour, 1h 10m. Local time (Europe/London).
Day
- 1♄︎ Saturn07:54 – 08:44
- 2♃︎ Jupiter08:44 – 09:34
- 3♂︎ Mars09:34 – 10:25
- 4☉︎ Sun10:25 – 11:15
- 5♀︎ Venus11:15 – 12:06
- 6☿︎ Mercury12:06 – 12:56
- 7☽︎ Moon12:56 – 13:46
- 8♄︎ Saturn13:46 – 14:37
- 9♃︎ Jupiter14:37 – 15:27
- 10♂︎ Mars15:27 – 16:17
- 11☉︎ Sun16:17 – 17:08
- 12♀︎ Venus17:08 – 17:58
Night
- 1☿︎ Mercury17:58 – 19:08
- 2☽︎ Moon19:08 – 20:18
- 3♄︎ Saturn20:18 – 21:27
- 4♃︎ Jupiter21:27 – 22:37
- 5♂︎ Mars22:37 – 23:47
- 6☉︎ Sun23:47 – 00:57
- 7♀︎ Venus00:57 – 01:07
- 8☿︎ Mercury01:07 – 02:16
- 9☽︎ Moon02:16 – 03:26
- 10♄︎ Saturn03:26 – 04:36
- 11♃︎ Jupiter04:36 – 05:46
- 12♂︎ Mars05:46 – 06:55
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Saturday, 25 October 2025, the Sun rises at 07:54 and sets at 17:58: the day lasts 10h 04m, that is twelve day hours of 50 min. The night, until the next sunrise at 06:55, lasts 13h 57m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
Saturn, from 07:54 to 08:44: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.