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, 2 July 2025: day of Mercury
- Sunrise
- 05:00
- Sunset
- 21:32
- Next sunrise
- 05:01
A day hour lasts 1h 23m; a night hour, 37 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:00 – 06:23
- 2☽︎ Moon06:23 – 07:46
- 3♄︎ Saturn07:46 – 09:08
- 4♃︎ Jupiter09:08 – 10:31
- 5♂︎ Mars10:31 – 11:54
- 6☉︎ Sun11:54 – 13:16
- 7♀︎ Venus13:16 – 14:39
- 8☿︎ Mercury14:39 – 16:01
- 9☽︎ Moon16:01 – 17:24
- 10♄︎ Saturn17:24 – 18:47
- 11♃︎ Jupiter18:47 – 20:09
- 12♂︎ Mars20:09 – 21:32
Night
- 1☉︎ Sun21:32 – 22:09
- 2♀︎ Venus22:09 – 22:47
- 3☿︎ Mercury22:47 – 23:24
- 4☽︎ Moon23:24 – 00:02
- 5♄︎ Saturn00:02 – 00:39
- 6♃︎ Jupiter00:39 – 01:17
- 7♂︎ Mars01:17 – 01:54
- 8☉︎ Sun01:54 – 02:31
- 9♀︎ Venus02:31 – 03:09
- 10☿︎ Mercury03:09 – 03:46
- 11☽︎ Moon03:46 – 04:24
- 12♄︎ Saturn04:24 – 05:01
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Wednesday, 2 July 2025, the Sun rises at 05:00 and sets at 21:32: the day lasts 16h 32m, that is twelve day hours of 1h 23m. The night, until the next sunrise at 05:01, lasts 7h 29m: twelve night hours of 37 min.
Which planet rules the first hour that day?
Mercury, from 05:00 to 06:23: 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.