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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 Wednesday, 16 December 2026: day of Mercury

Sunrise
08:12
Sunset
16:04
Next sunrise
08:13

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

Day

  1. 1☿︎ Mercury08:12 – 08:51
  2. 2☽︎ Moon08:51 – 09:31
  3. 3♄︎ Saturn09:31 – 10:10
  4. 4♃︎ Jupiter10:10 – 10:49
  5. 5♂︎ Mars10:49 – 11:28
  6. 6☉︎ Sun11:28 – 12:08
  7. 7♀︎ Venus12:08 – 12:47
  8. 8☿︎ Mercury12:47 – 13:26
  9. 9☽︎ Moon13:26 – 14:06
  10. 10♄︎ Saturn14:06 – 14:45
  11. 11♃︎ Jupiter14:45 – 15:24
  12. 12♂︎ Mars15:24 – 16:04

Night

  1. 1☉︎ Sun16:04 – 17:24
  2. 2♀︎ Venus17:24 – 18:45
  3. 3☿︎ Mercury18:45 – 20:06
  4. 4☽︎ Moon20:06 – 21:27
  5. 5♄︎ Saturn21:27 – 22:47
  6. 6♃︎ Jupiter22:47 – 00:08
  7. 7♂︎ Mars00:08 – 01:29
  8. 8☉︎ Sun01:29 – 02:50
  9. 9♀︎ Venus02:50 – 04:10
  10. 10☿︎ Mercury04:10 – 05:31
  11. 11☽︎ Moon05:31 – 06:52
  12. 12♄︎ Saturn06:52 – 08:13

Questions

How are the planetary hours calculated in Cardiff?

On Wednesday, 16 December 2026, the Sun rises at 08:12 and sets at 16:04: the day lasts 7h 52m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:13, lasts 16h 09m: twelve night hours of 1h 21m.

Which planet rules the first hour that day?

Mercury, from 08:12 to 08:51: 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.

My sky on my chart

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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.