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, 12 May 2026: day of Mars
- Sunrise
- 05:25
- Sunset
- 20:53
- Next sunrise
- 05:24
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:25 – 06:43
- 2☉︎ Sun06:43 – 08:00
- 3♀︎ Venus08:00 – 09:17
- 4☿︎ Mercury09:17 – 10:34
- 5☽︎ Moon10:34 – 11:52
- 6♄︎ Saturn11:52 – 13:09
- 7♃︎ Jupiter13:09 – 14:26
- 8♂︎ Mars14:26 – 15:44
- 9☉︎ Sun15:44 – 17:01
- 10♀︎ Venus17:01 – 18:18
- 11☿︎ Mercury18:18 – 19:36
- 12☽︎ Moon19:36 – 20:53
Night
- 1♄︎ Saturn20:53 – 21:36
- 2♃︎ Jupiter21:36 – 22:18
- 3♂︎ Mars22:18 – 23:01
- 4☉︎ Sun23:01 – 23:43
- 5♀︎ Venus23:43 – 00:26
- 6☿︎ Mercury00:26 – 01:08
- 7☽︎ Moon01:08 – 01:51
- 8♄︎ Saturn01:51 – 02:33
- 9♃︎ Jupiter02:33 – 03:16
- 10♂︎ Mars03:16 – 03:59
- 11☉︎ Sun03:59 – 04:41
- 12♀︎ Venus04:41 – 05:24
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Tuesday, 12 May 2026, the Sun rises at 05:25 and sets at 20:53: the day lasts 15h 28m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:24, lasts 8h 31m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Mars, from 05:25 to 06:43: 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.