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Planetary hours · Cardiff (United Kingdom)

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 Sunday, 21 December 2025: day of the Sun

Sunrise
08:15
Sunset
16:05
Next sunrise
08:16

A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).

Day

  1. 1☉︎ Sun08:15 – 08:55
  2. 2♀︎ Venus08:55 – 09:34
  3. 3☿︎ Mercury09:34 – 10:13
  4. 4☽︎ Moon10:13 – 10:52
  5. 5♄︎ Saturn10:52 – 11:31
  6. 6♃︎ Jupiter11:31 – 12:10
  7. 7♂︎ Mars12:10 – 12:50
  8. 8☉︎ Sun12:50 – 13:29
  9. 9♀︎ Venus13:29 – 14:08
  10. 10☿︎ Mercury14:08 – 14:47
  11. 11☽︎ Moon14:47 – 15:26
  12. 12♄︎ Saturn15:26 – 16:05

Night

  1. 1♃︎ Jupiter16:05 – 17:26
  2. 2♂︎ Mars17:26 – 18:47
  3. 3☉︎ Sun18:47 – 20:08
  4. 4♀︎ Venus20:08 – 21:29
  5. 5☿︎ Mercury21:29 – 22:50
  6. 6☽︎ Moon22:50 – 00:11
  7. 7♄︎ Saturn00:11 – 01:32
  8. 8♃︎ Jupiter01:32 – 02:52
  9. 9♂︎ Mars02:52 – 04:13
  10. 10☉︎ Sun04:13 – 05:34
  11. 11♀︎ Venus05:34 – 06:55
  12. 12☿︎ Mercury06:55 – 08:16

Other cities · United Kingdom

Questions

How are the planetary hours calculated in Cardiff?

On Sunday, 21 December 2025, the Sun rises at 08:15 and sets at 16:05: the day lasts 7h 50m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:16, lasts 16h 10m: twelve night hours of 1h 21m.

Which planet rules the first hour that day?

The Sun, from 08:15 to 08:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.

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Calendars

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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.