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, 29 December 2026: day of Mars
- Sunrise
- 08:18
- Sunset
- 16:11
- Next sunrise
- 08:18
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1♂︎ Mars08:18 – 08:57
- 2☉︎ Sun08:57 – 09:37
- 3♀︎ Venus09:37 – 10:16
- 4☿︎ Mercury10:16 – 10:55
- 5☽︎ Moon10:55 – 11:35
- 6♄︎ Saturn11:35 – 12:14
- 7♃︎ Jupiter12:14 – 12:54
- 8♂︎ Mars12:54 – 13:33
- 9☉︎ Sun13:33 – 14:13
- 10♀︎ Venus14:13 – 14:52
- 11☿︎ Mercury14:52 – 15:31
- 12☽︎ Moon15:31 – 16:11
Night
- 1♄︎ Saturn16:11 – 17:31
- 2♃︎ Jupiter17:31 – 18:52
- 3♂︎ Mars18:52 – 20:13
- 4☉︎ Sun20:13 – 21:33
- 5♀︎ Venus21:33 – 22:54
- 6☿︎ Mercury22:54 – 00:14
- 7☽︎ Moon00:14 – 01:35
- 8♄︎ Saturn01:35 – 02:55
- 9♃︎ Jupiter02:55 – 04:16
- 10♂︎ Mars04:16 – 05:37
- 11☉︎ Sun05:37 – 06:57
- 12♀︎ Venus06:57 – 08:18
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Tuesday, 29 December 2026, the Sun rises at 08:18 and sets at 16:11: the day lasts 7h 53m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:18, lasts 16h 07m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mars, from 08:18 to 08:57: 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.