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 Thursday, 20 August 2026: day of Jupiter
- Sunrise
- 06:06
- Sunset
- 20:25
- Next sunrise
- 06:07
A day hour lasts 1h 12m; a night hour, 49 min. Local time (Europe/London).
Day
- 1♃︎ Jupiter06:06 – 07:17
- 2♂︎ Mars07:17 – 08:29
- 3☉︎ Sun08:29 – 09:40
- 4♀︎ Venus09:40 – 10:52
- 5☿︎ Mercury10:52 – 12:03
- 6☽︎ Moon12:03 – 13:15
- 7♄︎ Saturn13:15 – 14:27
- 8♃︎ Jupiter14:27 – 15:38
- 9♂︎ Mars15:38 – 16:50
- 10☉︎ Sun16:50 – 18:01
- 11♀︎ Venus18:01 – 19:13
- 12☿︎ Mercury19:13 – 20:25
Night
- 1☽︎ Moon20:25 – 21:13
- 2♄︎ Saturn21:13 – 22:02
- 3♃︎ Jupiter22:02 – 22:50
- 4♂︎ Mars22:50 – 23:39
- 5☉︎ Sun23:39 – 00:27
- 6♀︎ Venus00:27 – 01:16
- 7☿︎ Mercury01:16 – 02:04
- 8☽︎ Moon02:04 – 02:53
- 9♄︎ Saturn02:53 – 03:42
- 10♃︎ Jupiter03:42 – 04:30
- 11♂︎ Mars04:30 – 05:19
- 12☉︎ Sun05:19 – 06:07
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Thursday, 20 August 2026, the Sun rises at 06:06 and sets at 20:25: the day lasts 14h 19m, that is twelve day hours of 1h 12m. The night, until the next sunrise at 06:07, lasts 9h 43m: twelve night hours of 49 min.
Which planet rules the first hour that day?
Jupiter, from 06:06 to 07:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.