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 Monday, 11 August 2025: day of the Moon
- Sunrise
- 05:52
- Sunset
- 20:42
- Next sunrise
- 05:53
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:52 – 07:06
- 2♄︎ Saturn07:06 – 08:20
- 3♃︎ Jupiter08:20 – 09:34
- 4♂︎ Mars09:34 – 10:48
- 5☉︎ Sun10:48 – 12:03
- 6♀︎ Venus12:03 – 13:17
- 7☿︎ Mercury13:17 – 14:31
- 8☽︎ Moon14:31 – 15:45
- 9♄︎ Saturn15:45 – 16:59
- 10♃︎ Jupiter16:59 – 18:14
- 11♂︎ Mars18:14 – 19:28
- 12☉︎ Sun19:28 – 20:42
Night
- 1♀︎ Venus20:42 – 21:28
- 2☿︎ Mercury21:28 – 22:14
- 3☽︎ Moon22:14 – 23:00
- 4♄︎ Saturn23:00 – 23:46
- 5♃︎ Jupiter23:46 – 00:32
- 6♂︎ Mars00:32 – 01:18
- 7☉︎ Sun01:18 – 02:04
- 8♀︎ Venus02:04 – 02:50
- 9☿︎ Mercury02:50 – 03:35
- 10☽︎ Moon03:35 – 04:21
- 11♄︎ Saturn04:21 – 05:07
- 12♃︎ Jupiter05:07 – 05:53
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Monday, 11 August 2025, the Sun rises at 05:52 and sets at 20:42: the day lasts 14h 50m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:53, lasts 9h 11m: twelve night hours of 46 min.
Which planet rules the first hour that day?
The Moon, from 05:52 to 07:06: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.