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 Sunday, 17 May 2026: day of the Sun
- Sunrise
- 05:18
- Sunset
- 21:00
- Next sunrise
- 05:16
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/London).
Day
- 1☉︎ Sun05:18 – 06:36
- 2♀︎ Venus06:36 – 07:55
- 3☿︎ Mercury07:55 – 09:13
- 4☽︎ Moon09:13 – 10:32
- 5♄︎ Saturn10:32 – 11:51
- 6♃︎ Jupiter11:51 – 13:09
- 7♂︎ Mars13:09 – 14:28
- 8☉︎ Sun14:28 – 15:46
- 9♀︎ Venus15:46 – 17:05
- 10☿︎ Mercury17:05 – 18:23
- 11☽︎ Moon18:23 – 19:42
- 12♄︎ Saturn19:42 – 21:00
Night
- 1♃︎ Jupiter21:00 – 21:42
- 2♂︎ Mars21:42 – 22:23
- 3☉︎ Sun22:23 – 23:04
- 4♀︎ Venus23:04 – 23:46
- 5☿︎ Mercury23:46 – 00:27
- 6☽︎ Moon00:27 – 01:08
- 7♄︎ Saturn01:08 – 01:50
- 8♃︎ Jupiter01:50 – 02:31
- 9♂︎ Mars02:31 – 03:12
- 10☉︎ Sun03:12 – 03:54
- 11♀︎ Venus03:54 – 04:35
- 12☿︎ Mercury04:35 – 05:16
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Cardiff?
On Sunday, 17 May 2026, the Sun rises at 05:18 and sets at 21:00: the day lasts 15h 43m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 05:16, lasts 8h 16m: twelve night hours of 41 min.
Which planet rules the first hour that day?
The Sun, from 05:18 to 06:36: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.