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, 13 September 2025: day of Saturn
- Sunrise
- 06:53
- Sunset
- 19:44
- Next sunrise
- 06:54
A day hour lasts 1h 04m; a night hour, 56 min. Local time (Europe/London).
Day
- 1♄︎ Saturn06:53 – 07:57
- 2♃︎ Jupiter07:57 – 09:01
- 3♂︎ Mars09:01 – 10:06
- 4☉︎ Sun10:06 – 11:10
- 5♀︎ Venus11:10 – 12:14
- 6☿︎ Mercury12:14 – 13:18
- 7☽︎ Moon13:18 – 14:23
- 8♄︎ Saturn14:23 – 15:27
- 9♃︎ Jupiter15:27 – 16:31
- 10♂︎ Mars16:31 – 17:36
- 11☉︎ Sun17:36 – 18:40
- 12♀︎ Venus18:40 – 19:44
Night
- 1☿︎ Mercury19:44 – 20:40
- 2☽︎ Moon20:40 – 21:36
- 3♄︎ Saturn21:36 – 22:32
- 4♃︎ Jupiter22:32 – 23:28
- 5♂︎ Mars23:28 – 00:24
- 6☉︎ Sun00:24 – 01:19
- 7♀︎ Venus01:19 – 02:15
- 8☿︎ Mercury02:15 – 03:11
- 9☽︎ Moon03:11 – 04:07
- 10♄︎ Saturn04:07 – 05:03
- 11♃︎ Jupiter05:03 – 05:59
- 12♂︎ Mars05:59 – 06:54
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Saturday, 13 September 2025, the Sun rises at 06:53 and sets at 19:44: the day lasts 12h 52m, that is twelve day hours of 1h 04m. The night, until the next sunrise at 06:54, lasts 11h 10m: twelve night hours of 56 min.
Which planet rules the first hour that day?
Saturn, from 06:53 to 07:57: 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.