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 Friday, 8 August 2025: day of Venus
- Sunrise
- 05:47
- Sunset
- 21:10
- Next sunrise
- 05:48
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/London).
Day
- 1♀︎ Venus05:47 – 07:04
- 2☿︎ Mercury07:04 – 08:21
- 3☽︎ Moon08:21 – 09:37
- 4♄︎ Saturn09:37 – 10:54
- 5♃︎ Jupiter10:54 – 12:11
- 6♂︎ Mars12:11 – 13:28
- 7☉︎ Sun13:28 – 14:45
- 8♀︎ Venus14:45 – 16:02
- 9☿︎ Mercury16:02 – 17:19
- 10☽︎ Moon17:19 – 18:36
- 11♄︎ Saturn18:36 – 19:53
- 12♃︎ Jupiter19:53 – 21:10
Night
- 1♂︎ Mars21:10 – 21:53
- 2☉︎ Sun21:53 – 22:36
- 3♀︎ Venus22:36 – 23:19
- 4☿︎ Mercury23:19 – 00:03
- 5☽︎ Moon00:03 – 00:46
- 6♄︎ Saturn00:46 – 01:29
- 7♃︎ Jupiter01:29 – 02:12
- 8♂︎ Mars02:12 – 02:56
- 9☉︎ Sun02:56 – 03:39
- 10♀︎ Venus03:39 – 04:22
- 11☿︎ Mercury04:22 – 05:05
- 12☽︎ Moon05:05 – 05:48
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Friday, 8 August 2025, the Sun rises at 05:47 and sets at 21:10: the day lasts 15h 23m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:48, lasts 8h 39m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Venus, from 05:47 to 07:04: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.