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, 29 July 2026: day of Mercury
- Sunrise
- 05:32
- Sunset
- 21:05
- Next sunrise
- 05:33
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:32 – 06:49
- 2☽︎ Moon06:49 – 08:07
- 3♄︎ Saturn08:07 – 09:25
- 4♃︎ Jupiter09:25 – 10:43
- 5♂︎ Mars10:43 – 12:00
- 6☉︎ Sun12:00 – 13:18
- 7♀︎ Venus13:18 – 14:36
- 8☿︎ Mercury14:36 – 15:54
- 9☽︎ Moon15:54 – 17:12
- 10♄︎ Saturn17:12 – 18:29
- 11♃︎ Jupiter18:29 – 19:47
- 12♂︎ Mars19:47 – 21:05
Night
- 1☉︎ Sun21:05 – 21:47
- 2♀︎ Venus21:47 – 22:30
- 3☿︎ Mercury22:30 – 23:12
- 4☽︎ Moon23:12 – 23:54
- 5♄︎ Saturn23:54 – 00:37
- 6♃︎ Jupiter00:37 – 01:19
- 7♂︎ Mars01:19 – 02:01
- 8☉︎ Sun02:01 – 02:44
- 9♀︎ Venus02:44 – 03:26
- 10☿︎ Mercury03:26 – 04:08
- 11☽︎ Moon04:08 – 04:51
- 12♄︎ Saturn04:51 – 05:33
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Wednesday, 29 July 2026, the Sun rises at 05:32 and sets at 21:05: the day lasts 15h 33m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 05:33, lasts 8h 28m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Mercury, from 05:32 to 06:49: 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.