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 Tuesday, 12 August 2025: day of Mars
- Sunrise
- 05:54
- Sunset
- 21:01
- Next sunrise
- 05:56
A day hour lasts 1h 16m; a night hour, 45 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:54 – 07:10
- 2☉︎ Sun07:10 – 08:25
- 3♀︎ Venus08:25 – 09:41
- 4☿︎ Mercury09:41 – 10:56
- 5☽︎ Moon10:56 – 12:12
- 6♄︎ Saturn12:12 – 13:28
- 7♃︎ Jupiter13:28 – 14:43
- 8♂︎ Mars14:43 – 15:59
- 9☉︎ Sun15:59 – 17:14
- 10♀︎ Venus17:14 – 18:30
- 11☿︎ Mercury18:30 – 19:46
- 12☽︎ Moon19:46 – 21:01
Night
- 1♄︎ Saturn21:01 – 21:46
- 2♃︎ Jupiter21:46 – 22:30
- 3♂︎ Mars22:30 – 23:15
- 4☉︎ Sun23:15 – 23:59
- 5♀︎ Venus23:59 – 00:44
- 6☿︎ Mercury00:44 – 01:29
- 7☽︎ Moon01:29 – 02:13
- 8♄︎ Saturn02:13 – 02:58
- 9♃︎ Jupiter02:58 – 03:42
- 10♂︎ Mars03:42 – 04:27
- 11☉︎ Sun04:27 – 05:11
- 12♀︎ Venus05:11 – 05:56
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 12 August 2025, the Sun rises at 05:54 and sets at 21:01: the day lasts 15h 07m, that is twelve day hours of 1h 16m. The night, until the next sunrise at 05:56, lasts 8h 55m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Mars, from 05:54 to 07:10: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.