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 Thursday, 7 August 2025: day of Jupiter
- Sunrise
- 05:45
- Sunset
- 20:49
- Next sunrise
- 05:47
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/London).
Day
- 1♃︎ Jupiter05:45 – 07:01
- 2♂︎ Mars07:01 – 08:16
- 3☉︎ Sun08:16 – 09:31
- 4♀︎ Venus09:31 – 10:47
- 5☿︎ Mercury10:47 – 12:02
- 6☽︎ Moon12:02 – 13:17
- 7♄︎ Saturn13:17 – 14:33
- 8♃︎ Jupiter14:33 – 15:48
- 9♂︎ Mars15:48 – 17:03
- 10☉︎ Sun17:03 – 18:19
- 11♀︎ Venus18:19 – 19:34
- 12☿︎ Mercury19:34 – 20:49
Night
- 1☽︎ Moon20:49 – 21:34
- 2♄︎ Saturn21:34 – 22:19
- 3♃︎ Jupiter22:19 – 23:04
- 4♂︎ Mars23:04 – 23:49
- 5☉︎ Sun23:49 – 00:33
- 6♀︎ Venus00:33 – 01:18
- 7☿︎ Mercury01:18 – 02:03
- 8☽︎ Moon02:03 – 02:48
- 9♄︎ Saturn02:48 – 03:33
- 10♃︎ Jupiter03:33 – 04:17
- 11♂︎ Mars04:17 – 05:02
- 12☉︎ Sun05:02 – 05:47
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Thursday, 7 August 2025, the Sun rises at 05:45 and sets at 20:49: the day lasts 15h 04m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 05:47, lasts 8h 58m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Jupiter, from 05:45 to 07:01: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.