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, 29 December 2025: day of the Moon
- Sunrise
- 08:46
- Sunset
- 16:05
- Next sunrise
- 08:46
A day hour lasts 37 min; a night hour, 1h 23m. Local time (Europe/London).
Day
- 1☽︎ Moon08:46 – 09:23
- 2♄︎ Saturn09:23 – 09:59
- 3♃︎ Jupiter09:59 – 10:36
- 4♂︎ Mars10:36 – 11:12
- 5☉︎ Sun11:12 – 11:49
- 6♀︎ Venus11:49 – 12:25
- 7☿︎ Mercury12:25 – 13:02
- 8☽︎ Moon13:02 – 13:39
- 9♄︎ Saturn13:39 – 14:15
- 10♃︎ Jupiter14:15 – 14:52
- 11♂︎ Mars14:52 – 15:28
- 12☉︎ Sun15:28 – 16:05
Night
- 1♀︎ Venus16:05 – 17:28
- 2☿︎ Mercury17:28 – 18:52
- 3☽︎ Moon18:52 – 20:15
- 4♄︎ Saturn20:15 – 21:39
- 5♃︎ Jupiter21:39 – 23:02
- 6♂︎ Mars23:02 – 00:25
- 7☉︎ Sun00:25 – 01:49
- 8♀︎ Venus01:49 – 03:12
- 9☿︎ Mercury03:12 – 04:36
- 10☽︎ Moon04:36 – 05:59
- 11♄︎ Saturn05:59 – 07:22
- 12♃︎ Jupiter07:22 – 08:46
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Monday, 29 December 2025, the Sun rises at 08:46 and sets at 16:05: the day lasts 7h 19m, that is twelve day hours of 37 min. The night, until the next sunrise at 08:46, lasts 16h 41m: twelve night hours of 1h 23m.
Which planet rules the first hour that day?
The Moon, from 08:46 to 09:23: 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.