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 Saturday, 10 January 2026: day of Saturn
- Sunrise
- 08:15
- Sunset
- 16:25
- Next sunrise
- 08:14
A day hour lasts 41 min; a night hour, 1h 19m. Local time (Europe/London).
Day
- 1♄︎ Saturn08:15 – 08:55
- 2♃︎ Jupiter08:55 – 09:36
- 3♂︎ Mars09:36 – 10:17
- 4☉︎ Sun10:17 – 10:58
- 5♀︎ Venus10:58 – 11:39
- 6☿︎ Mercury11:39 – 12:20
- 7☽︎ Moon12:20 – 13:01
- 8♄︎ Saturn13:01 – 13:42
- 9♃︎ Jupiter13:42 – 14:23
- 10♂︎ Mars14:23 – 15:03
- 11☉︎ Sun15:03 – 15:44
- 12♀︎ Venus15:44 – 16:25
Night
- 1☿︎ Mercury16:25 – 17:44
- 2☽︎ Moon17:44 – 19:03
- 3♄︎ Saturn19:03 – 20:22
- 4♃︎ Jupiter20:22 – 21:41
- 5♂︎ Mars21:41 – 23:01
- 6☉︎ Sun23:01 – 00:20
- 7♀︎ Venus00:20 – 01:39
- 8☿︎ Mercury01:39 – 02:58
- 9☽︎ Moon02:58 – 04:17
- 10♄︎ Saturn04:17 – 05:36
- 11♃︎ Jupiter05:36 – 06:55
- 12♂︎ Mars06:55 – 08:14
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Saturday, 10 January 2026, the Sun rises at 08:15 and sets at 16:25: the day lasts 8h 11m, that is twelve day hours of 41 min. The night, until the next sunrise at 08:14, lasts 15h 49m: twelve night hours of 1h 19m.
Which planet rules the first hour that day?
Saturn, from 08:15 to 08:55: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.