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, 23 May 2026: day of Saturn
- Sunrise
- 05:10
- Sunset
- 21:09
- Next sunrise
- 05:09
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/London).
Day
- 1♄︎ Saturn05:10 – 06:30
- 2♃︎ Jupiter06:30 – 07:50
- 3♂︎ Mars07:50 – 09:10
- 4☉︎ Sun09:10 – 10:30
- 5♀︎ Venus10:30 – 11:49
- 6☿︎ Mercury11:49 – 13:09
- 7☽︎ Moon13:09 – 14:29
- 8♄︎ Saturn14:29 – 15:49
- 9♃︎ Jupiter15:49 – 17:09
- 10♂︎ Mars17:09 – 18:29
- 11☉︎ Sun18:29 – 19:49
- 12♀︎ Venus19:49 – 21:09
Night
- 1☿︎ Mercury21:09 – 21:49
- 2☽︎ Moon21:49 – 22:29
- 3♄︎ Saturn22:29 – 23:09
- 4♃︎ Jupiter23:09 – 23:49
- 5♂︎ Mars23:49 – 00:29
- 6☉︎ Sun00:29 – 01:09
- 7♀︎ Venus01:09 – 01:49
- 8☿︎ Mercury01:49 – 02:29
- 9☽︎ Moon02:29 – 03:09
- 10♄︎ Saturn03:09 – 03:49
- 11♃︎ Jupiter03:49 – 04:29
- 12♂︎ Mars04:29 – 05:09
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Saturday, 23 May 2026, the Sun rises at 05:10 and sets at 21:09: the day lasts 15h 59m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 05:09, lasts 8h 00m: twelve night hours of 40 min.
Which planet rules the first hour that day?
Saturn, from 05:10 to 06:30: 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.