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 Wednesday, 9 December 2026: day of Mercury
- Sunrise
- 08:33
- Sunset
- 15:58
- Next sunrise
- 08:34
A day hour lasts 37 min; a night hour, 1h 23m. Local time (Europe/London).
Day
- 1☿︎ Mercury08:33 – 09:10
- 2☽︎ Moon09:10 – 09:47
- 3♄︎ Saturn09:47 – 10:24
- 4♃︎ Jupiter10:24 – 11:01
- 5♂︎ Mars11:01 – 11:38
- 6☉︎ Sun11:38 – 12:15
- 7♀︎ Venus12:15 – 12:52
- 8☿︎ Mercury12:52 – 13:30
- 9☽︎ Moon13:30 – 14:07
- 10♄︎ Saturn14:07 – 14:44
- 11♃︎ Jupiter14:44 – 15:21
- 12♂︎ Mars15:21 – 15:58
Night
- 1☉︎ Sun15:58 – 17:21
- 2♀︎ Venus17:21 – 18:44
- 3☿︎ Mercury18:44 – 20:07
- 4☽︎ Moon20:07 – 21:30
- 5♄︎ Saturn21:30 – 22:53
- 6♃︎ Jupiter22:53 – 00:16
- 7♂︎ Mars00:16 – 01:39
- 8☉︎ Sun01:39 – 03:02
- 9♀︎ Venus03:02 – 04:25
- 10☿︎ Mercury04:25 – 05:48
- 11☽︎ Moon05:48 – 07:11
- 12♄︎ Saturn07:11 – 08:34
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Wednesday, 9 December 2026, the Sun rises at 08:33 and sets at 15:58: the day lasts 7h 25m, that is twelve day hours of 37 min. The night, until the next sunrise at 08:34, lasts 16h 37m: twelve night hours of 1h 23m.
Which planet rules the first hour that day?
Mercury, from 08:33 to 09:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.