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 Tuesday, 20 May 2025: day of Mars
- Sunrise
- 05:13
- Sunset
- 21:05
- Next sunrise
- 05:12
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:13 – 06:33
- 2☉︎ Sun06:33 – 07:52
- 3♀︎ Venus07:52 – 09:11
- 4☿︎ Mercury09:11 – 10:31
- 5☽︎ Moon10:31 – 11:50
- 6♄︎ Saturn11:50 – 13:09
- 7♃︎ Jupiter13:09 – 14:29
- 8♂︎ Mars14:29 – 15:48
- 9☉︎ Sun15:48 – 17:07
- 10♀︎ Venus17:07 – 18:27
- 11☿︎ Mercury18:27 – 19:46
- 12☽︎ Moon19:46 – 21:05
Night
- 1♄︎ Saturn21:05 – 21:46
- 2♃︎ Jupiter21:46 – 22:26
- 3♂︎ Mars22:26 – 23:07
- 4☉︎ Sun23:07 – 23:47
- 5♀︎ Venus23:47 – 00:28
- 6☿︎ Mercury00:28 – 01:09
- 7☽︎ Moon01:09 – 01:49
- 8♄︎ Saturn01:49 – 02:30
- 9♃︎ Jupiter02:30 – 03:10
- 10♂︎ Mars03:10 – 03:51
- 11☉︎ Sun03:51 – 04:31
- 12♀︎ Venus04:31 – 05:12
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Tuesday, 20 May 2025, the Sun rises at 05:13 and sets at 21:05: the day lasts 15h 52m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 05:12, lasts 8h 07m: twelve night hours of 41 min.
Which planet rules the first hour that day?
Mars, from 05:13 to 06:33: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.