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 Saturday, 27 December 2025: day of Saturn
- Sunrise
- 08:46
- Sunset
- 16:03
- Next sunrise
- 08:46
A day hour lasts 36 min; a night hour, 1h 24m. Local time (Europe/London).
Day
- 1♄︎ Saturn08:46 – 09:22
- 2♃︎ Jupiter09:22 – 09:59
- 3♂︎ Mars09:59 – 10:35
- 4☉︎ Sun10:35 – 11:12
- 5♀︎ Venus11:12 – 11:48
- 6☿︎ Mercury11:48 – 12:24
- 7☽︎ Moon12:24 – 13:01
- 8♄︎ Saturn13:01 – 13:37
- 9♃︎ Jupiter13:37 – 14:14
- 10♂︎ Mars14:14 – 14:50
- 11☉︎ Sun14:50 – 15:27
- 12♀︎ Venus15:27 – 16:03
Night
- 1☿︎ Mercury16:03 – 17:27
- 2☽︎ Moon17:27 – 18:50
- 3♄︎ Saturn18:50 – 20:14
- 4♃︎ Jupiter20:14 – 21:37
- 5♂︎ Mars21:37 – 23:01
- 6☉︎ Sun23:01 – 00:24
- 7♀︎ Venus00:24 – 01:48
- 8☿︎ Mercury01:48 – 03:12
- 9☽︎ Moon03:12 – 04:35
- 10♄︎ Saturn04:35 – 05:59
- 11♃︎ Jupiter05:59 – 07:22
- 12♂︎ Mars07:22 – 08:46
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Saturday, 27 December 2025, the Sun rises at 08:46 and sets at 16:03: the day lasts 7h 17m, that is twelve day hours of 36 min. The night, until the next sunrise at 08:46, lasts 16h 43m: twelve night hours of 1h 24m.
Which planet rules the first hour that day?
Saturn, from 08:46 to 09:22: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.