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, 12 August 2026: day of Mercury
- Sunrise
- 05:53
- Sunset
- 20:41
- Next sunrise
- 05:55
A day hour lasts 1h 14m; a night hour, 46 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:53 – 07:07
- 2☽︎ Moon07:07 – 08:21
- 3♄︎ Saturn08:21 – 09:35
- 4♃︎ Jupiter09:35 – 10:49
- 5♂︎ Mars10:49 – 12:03
- 6☉︎ Sun12:03 – 13:17
- 7♀︎ Venus13:17 – 14:31
- 8☿︎ Mercury14:31 – 15:45
- 9☽︎ Moon15:45 – 16:59
- 10♄︎ Saturn16:59 – 18:13
- 11♃︎ Jupiter18:13 – 19:27
- 12♂︎ Mars19:27 – 20:41
Night
- 1☉︎ Sun20:41 – 21:27
- 2♀︎ Venus21:27 – 22:13
- 3☿︎ Mercury22:13 – 22:59
- 4☽︎ Moon22:59 – 23:45
- 5♄︎ Saturn23:45 – 00:31
- 6♃︎ Jupiter00:31 – 01:18
- 7♂︎ Mars01:18 – 02:04
- 8☉︎ Sun02:04 – 02:50
- 9♀︎ Venus02:50 – 03:36
- 10☿︎ Mercury03:36 – 04:22
- 11☽︎ Moon04:22 – 05:08
- 12♄︎ Saturn05:08 – 05:55
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Wednesday, 12 August 2026, the Sun rises at 05:53 and sets at 20:41: the day lasts 14h 48m, that is twelve day hours of 1h 14m. The night, until the next sunrise at 05:55, lasts 9h 14m: twelve night hours of 46 min.
Which planet rules the first hour that day?
Mercury, from 05:53 to 07:07: 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.