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, 18 May 2026: day of the Moon
- Sunrise
- 05:16
- Sunset
- 21:02
- Next sunrise
- 05:15
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/London).
Day
- 1☽︎ Moon05:16 – 06:35
- 2♄︎ Saturn06:35 – 07:54
- 3♃︎ Jupiter07:54 – 09:13
- 4♂︎ Mars09:13 – 10:32
- 5☉︎ Sun10:32 – 11:50
- 6♀︎ Venus11:50 – 13:09
- 7☿︎ Mercury13:09 – 14:28
- 8☽︎ Moon14:28 – 15:47
- 9♄︎ Saturn15:47 – 17:06
- 10♃︎ Jupiter17:06 – 18:24
- 11♂︎ Mars18:24 – 19:43
- 12☉︎ Sun19:43 – 21:02
Night
- 1♀︎ Venus21:02 – 21:43
- 2☿︎ Mercury21:43 – 22:24
- 3☽︎ Moon22:24 – 23:05
- 4♄︎ Saturn23:05 – 23:46
- 5♃︎ Jupiter23:46 – 00:27
- 6♂︎ Mars00:27 – 01:08
- 7☉︎ Sun01:08 – 01:50
- 8♀︎ Venus01:50 – 02:31
- 9☿︎ Mercury02:31 – 03:12
- 10☽︎ Moon03:12 – 03:53
- 11♄︎ Saturn03:53 – 04:34
- 12♃︎ Jupiter04:34 – 05:15
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Monday, 18 May 2026, the Sun rises at 05:16 and sets at 21:02: the day lasts 15h 46m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 05:15, lasts 8h 13m: twelve night hours of 41 min.
Which planet rules the first hour that day?
The Moon, from 05:16 to 06:35: 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.