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, 12 September 2026: day of Saturn
- Sunrise
- 06:42
- Sunset
- 19:34
- Next sunrise
- 06:44
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/London).
Day
- 1♄︎ Saturn06:42 – 07:47
- 2♃︎ Jupiter07:47 – 08:51
- 3♂︎ Mars08:51 – 09:55
- 4☉︎ Sun09:55 – 10:59
- 5♀︎ Venus10:59 – 12:04
- 6☿︎ Mercury12:04 – 13:08
- 7☽︎ Moon13:08 – 14:12
- 8♄︎ Saturn14:12 – 15:17
- 9♃︎ Jupiter15:17 – 16:21
- 10♂︎ Mars16:21 – 17:25
- 11☉︎ Sun17:25 – 18:29
- 12♀︎ Venus18:29 – 19:34
Night
- 1☿︎ Mercury19:34 – 20:30
- 2☽︎ Moon20:30 – 21:25
- 3♄︎ Saturn21:25 – 22:21
- 4♃︎ Jupiter22:21 – 23:17
- 5♂︎ Mars23:17 – 00:13
- 6☉︎ Sun00:13 – 01:09
- 7♀︎ Venus01:09 – 02:05
- 8☿︎ Mercury02:05 – 03:00
- 9☽︎ Moon03:00 – 03:56
- 10♄︎ Saturn03:56 – 04:52
- 11♃︎ Jupiter04:52 – 05:48
- 12♂︎ Mars05:48 – 06:44
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Saturday, 12 September 2026, the Sun rises at 06:42 and sets at 19:34: the day lasts 12h 52m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:44, lasts 11h 10m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Saturn, from 06:42 to 07:47: 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.