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, 15 August 2026: day of Saturn
- Sunrise
- 05:58
- Sunset
- 20:35
- Next sunrise
- 05:59
A day hour lasts 1h 13m; a night hour, 47 min. Local time (Europe/London).
Day
- 1♄︎ Saturn05:58 – 07:11
- 2♃︎ Jupiter07:11 – 08:24
- 3♂︎ Mars08:24 – 09:37
- 4☉︎ Sun09:37 – 10:50
- 5♀︎ Venus10:50 – 12:03
- 6☿︎ Mercury12:03 – 13:16
- 7☽︎ Moon13:16 – 14:29
- 8♄︎ Saturn14:29 – 15:42
- 9♃︎ Jupiter15:42 – 16:55
- 10♂︎ Mars16:55 – 18:08
- 11☉︎ Sun18:08 – 19:22
- 12♀︎ Venus19:22 – 20:35
Night
- 1☿︎ Mercury20:35 – 21:22
- 2☽︎ Moon21:22 – 22:09
- 3♄︎ Saturn22:09 – 22:56
- 4♃︎ Jupiter22:56 – 23:43
- 5♂︎ Mars23:43 – 00:30
- 6☉︎ Sun00:30 – 01:17
- 7♀︎ Venus01:17 – 02:04
- 8☿︎ Mercury02:04 – 02:51
- 9☽︎ Moon02:51 – 03:38
- 10♄︎ Saturn03:38 – 04:25
- 11♃︎ Jupiter04:25 – 05:12
- 12♂︎ Mars05:12 – 05:59
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Saturday, 15 August 2026, the Sun rises at 05:58 and sets at 20:35: the day lasts 14h 37m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 05:59, lasts 9h 25m: twelve night hours of 47 min.
Which planet rules the first hour that day?
Saturn, from 05:58 to 07:11: 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.