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 Monday, 21 September 2026: day of the Moon
- Sunrise
- 06:57
- Sunset
- 19:13
- Next sunrise
- 06:58
A day hour lasts 1h 01m; a night hour, 59 min. Local time (Europe/London).
Day
- 1☽︎ Moon06:57 – 07:58
- 2♄︎ Saturn07:58 – 08:59
- 3♃︎ Jupiter08:59 – 10:01
- 4♂︎ Mars10:01 – 11:02
- 5☉︎ Sun11:02 – 12:03
- 6♀︎ Venus12:03 – 13:05
- 7☿︎ Mercury13:05 – 14:06
- 8☽︎ Moon14:06 – 15:08
- 9♄︎ Saturn15:08 – 16:09
- 10♃︎ Jupiter16:09 – 17:10
- 11♂︎ Mars17:10 – 18:12
- 12☉︎ Sun18:12 – 19:13
Night
- 1♀︎ Venus19:13 – 20:12
- 2☿︎ Mercury20:12 – 21:11
- 3☽︎ Moon21:11 – 22:09
- 4♄︎ Saturn22:09 – 23:08
- 5♃︎ Jupiter23:08 – 00:07
- 6♂︎ Mars00:07 – 01:06
- 7☉︎ Sun01:06 – 02:04
- 8♀︎ Venus02:04 – 03:03
- 9☿︎ Mercury03:03 – 04:02
- 10☽︎ Moon04:02 – 05:01
- 11♄︎ Saturn05:01 – 05:59
- 12♃︎ Jupiter05:59 – 06:58
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Monday, 21 September 2026, the Sun rises at 06:57 and sets at 19:13: the day lasts 12h 16m, that is twelve day hours of 1h 01m. The night, until the next sunrise at 06:58, lasts 11h 45m: twelve night hours of 59 min.
Which planet rules the first hour that day?
The Moon, from 06:57 to 07:58: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.