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 Wednesday, 20 May 2026: day of Mercury
- Sunrise
- 05:14
- Sunset
- 21:05
- Next sunrise
- 05:12
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:14 – 06:33
- 2☽︎ Moon06:33 – 07:52
- 3♄︎ Saturn07:52 – 09:11
- 4♃︎ Jupiter09:11 – 10:31
- 5♂︎ Mars10:31 – 11:50
- 6☉︎ Sun11:50 – 13:09
- 7♀︎ Venus13:09 – 14:28
- 8☿︎ Mercury14:28 – 15:48
- 9☽︎ Moon15:48 – 17:07
- 10♄︎ Saturn17:07 – 18:26
- 11♃︎ Jupiter18:26 – 19:46
- 12♂︎ Mars19:46 – 21:05
Night
- 1☉︎ Sun21:05 – 21:45
- 2♀︎ Venus21:45 – 22:26
- 3☿︎ Mercury22:26 – 23:07
- 4☽︎ Moon23:07 – 23:47
- 5♄︎ Saturn23:47 – 00:28
- 6♃︎ Jupiter00:28 – 01:09
- 7♂︎ Mars01:09 – 01:49
- 8☉︎ Sun01:49 – 02:30
- 9♀︎ Venus02:30 – 03:10
- 10☿︎ Mercury03:10 – 03:51
- 11☽︎ Moon03:51 – 04:32
- 12♄︎ Saturn04:32 – 05:12
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Wednesday, 20 May 2026, the Sun rises at 05:14 and sets at 21:05: the day lasts 15h 51m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 05:12, lasts 8h 08m: twelve night hours of 41 min.
Which planet rules the first hour that day?
Mercury, from 05:14 to 06:33: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.