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, 18 October 2025: day of Saturn
- Sunrise
- 07:58
- Sunset
- 18:17
- Next sunrise
- 08:00
A day hour lasts 52 min; a night hour, 1h 09m. Local time (Europe/London).
Day
- 1♄︎ Saturn07:58 – 08:50
- 2♃︎ Jupiter08:50 – 09:41
- 3♂︎ Mars09:41 – 10:33
- 4☉︎ Sun10:33 – 11:25
- 5♀︎ Venus11:25 – 12:16
- 6☿︎ Mercury12:16 – 13:08
- 7☽︎ Moon13:08 – 13:59
- 8♄︎ Saturn13:59 – 14:51
- 9♃︎ Jupiter14:51 – 15:43
- 10♂︎ Mars15:43 – 16:34
- 11☉︎ Sun16:34 – 17:26
- 12♀︎ Venus17:26 – 18:17
Night
- 1☿︎ Mercury18:17 – 19:26
- 2☽︎ Moon19:26 – 20:35
- 3♄︎ Saturn20:35 – 21:43
- 4♃︎ Jupiter21:43 – 22:52
- 5♂︎ Mars22:52 – 00:00
- 6☉︎ Sun00:00 – 01:09
- 7♀︎ Venus01:09 – 02:17
- 8☿︎ Mercury02:17 – 03:26
- 9☽︎ Moon03:26 – 04:35
- 10♄︎ Saturn04:35 – 05:43
- 11♃︎ Jupiter05:43 – 06:52
- 12♂︎ Mars06:52 – 08:00
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Saturday, 18 October 2025, the Sun rises at 07:58 and sets at 18:17: the day lasts 10h 19m, that is twelve day hours of 52 min. The night, until the next sunrise at 08:00, lasts 13h 43m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Saturn, from 07:58 to 08:50: 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.