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 Wednesday, 16 July 2025: day of Mercury
- Sunrise
- 05:14
- Sunset
- 21:22
- Next sunrise
- 05:15
A day hour lasts 1h 21m; a night hour, 39 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:14 – 06:35
- 2☽︎ Moon06:35 – 07:55
- 3♄︎ Saturn07:55 – 09:16
- 4♃︎ Jupiter09:16 – 10:37
- 5♂︎ Mars10:37 – 11:57
- 6☉︎ Sun11:57 – 13:18
- 7♀︎ Venus13:18 – 14:39
- 8☿︎ Mercury14:39 – 15:59
- 9☽︎ Moon15:59 – 17:20
- 10♄︎ Saturn17:20 – 18:40
- 11♃︎ Jupiter18:40 – 20:01
- 12♂︎ Mars20:01 – 21:22
Night
- 1☉︎ Sun21:22 – 22:01
- 2♀︎ Venus22:01 – 22:41
- 3☿︎ Mercury22:41 – 23:20
- 4☽︎ Moon23:20 – 00:00
- 5♄︎ Saturn00:00 – 00:39
- 6♃︎ Jupiter00:39 – 01:19
- 7♂︎ Mars01:19 – 01:58
- 8☉︎ Sun01:58 – 02:38
- 9♀︎ Venus02:38 – 03:17
- 10☿︎ Mercury03:17 – 03:56
- 11☽︎ Moon03:56 – 04:36
- 12♄︎ Saturn04:36 – 05:15
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Wednesday, 16 July 2025, the Sun rises at 05:14 and sets at 21:22: the day lasts 16h 07m, that is twelve day hours of 1h 21m. The night, until the next sunrise at 05:15, lasts 7h 54m: twelve night hours of 39 min.
Which planet rules the first hour that day?
Mercury, from 05:14 to 06:35: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.