Planetary hours
in Belfast.
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 Monday, 21 December 2026: day of the Moon
- Sunrise
- 08:44
- Sunset
- 15:59
- Next sunrise
- 08:44
A day hour lasts 36 min; a night hour, 1h 24m. Local time (Europe/London).
Day
- 1☽︎ Moon08:44 – 09:20
- 2♄︎ Saturn09:20 – 09:56
- 3♃︎ Jupiter09:56 – 10:33
- 4♂︎ Mars10:33 – 11:09
- 5☉︎ Sun11:09 – 11:45
- 6♀︎ Venus11:45 – 12:21
- 7☿︎ Mercury12:21 – 12:58
- 8☽︎ Moon12:58 – 13:34
- 9♄︎ Saturn13:34 – 14:10
- 10♃︎ Jupiter14:10 – 14:46
- 11♂︎ Mars14:46 – 15:23
- 12☉︎ Sun15:23 – 15:59
Night
- 1♀︎ Venus15:59 – 17:23
- 2☿︎ Mercury17:23 – 18:46
- 3☽︎ Moon18:46 – 20:10
- 4♄︎ Saturn20:10 – 21:34
- 5♃︎ Jupiter21:34 – 22:58
- 6♂︎ Mars22:58 – 00:22
- 7☉︎ Sun00:22 – 01:45
- 8♀︎ Venus01:45 – 03:09
- 9☿︎ Mercury03:09 – 04:33
- 10☽︎ Moon04:33 – 05:57
- 11♄︎ Saturn05:57 – 07:20
- 12♃︎ Jupiter07:20 – 08:44
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Monday, 21 December 2026, the Sun rises at 08:44 and sets at 15:59: the day lasts 7h 15m, that is twelve day hours of 36 min. The night, until the next sunrise at 08:44, lasts 16h 45m: twelve night hours of 1h 24m.
Which planet rules the first hour that day?
The Moon, from 08:44 to 09:20: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.