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 Friday, 4 September 2026: day of Venus
- Sunrise
- 06:29
- Sunset
- 19:52
- Next sunrise
- 06:31
A day hour lasts 1h 07m; a night hour, 53 min. Local time (Europe/London).
Day
- 1♀︎ Venus06:29 – 07:36
- 2☿︎ Mercury07:36 – 08:43
- 3☽︎ Moon08:43 – 09:50
- 4♄︎ Saturn09:50 – 10:57
- 5♃︎ Jupiter10:57 – 12:04
- 6♂︎ Mars12:04 – 13:11
- 7☉︎ Sun13:11 – 14:18
- 8♀︎ Venus14:18 – 15:24
- 9☿︎ Mercury15:24 – 16:31
- 10☽︎ Moon16:31 – 17:38
- 11♄︎ Saturn17:38 – 18:45
- 12♃︎ Jupiter18:45 – 19:52
Night
- 1♂︎ Mars19:52 – 20:45
- 2☉︎ Sun20:45 – 21:38
- 3♀︎ Venus21:38 – 22:32
- 4☿︎ Mercury22:32 – 23:25
- 5☽︎ Moon23:25 – 00:18
- 6♄︎ Saturn00:18 – 01:12
- 7♃︎ Jupiter01:12 – 02:05
- 8♂︎ Mars02:05 – 02:58
- 9☉︎ Sun02:58 – 03:51
- 10♀︎ Venus03:51 – 04:45
- 11☿︎ Mercury04:45 – 05:38
- 12☽︎ Moon05:38 – 06:31
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Friday, 4 September 2026, the Sun rises at 06:29 and sets at 19:52: the day lasts 13h 22m, that is twelve day hours of 1h 07m. The night, until the next sunrise at 06:31, lasts 10h 39m: twelve night hours of 53 min.
Which planet rules the first hour that day?
Venus, from 06:29 to 07:36: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.