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, 1 August 2025: day of Venus
- Sunrise
- 05:34
- Sunset
- 21:24
- Next sunrise
- 05:36
A day hour lasts 1h 19m; a night hour, 41 min. Local time (Europe/London).
Day
- 1♀︎ Venus05:34 – 06:53
- 2☿︎ Mercury06:53 – 08:12
- 3☽︎ Moon08:12 – 09:32
- 4♄︎ Saturn09:32 – 10:51
- 5♃︎ Jupiter10:51 – 12:10
- 6♂︎ Mars12:10 – 13:29
- 7☉︎ Sun13:29 – 14:48
- 8♀︎ Venus14:48 – 16:07
- 9☿︎ Mercury16:07 – 17:26
- 10☽︎ Moon17:26 – 18:45
- 11♄︎ Saturn18:45 – 20:05
- 12♃︎ Jupiter20:05 – 21:24
Night
- 1♂︎ Mars21:24 – 22:05
- 2☉︎ Sun22:05 – 22:46
- 3♀︎ Venus22:46 – 23:27
- 4☿︎ Mercury23:27 – 00:08
- 5☽︎ Moon00:08 – 00:49
- 6♄︎ Saturn00:49 – 01:30
- 7♃︎ Jupiter01:30 – 02:11
- 8♂︎ Mars02:11 – 02:52
- 9☉︎ Sun02:52 – 03:33
- 10♀︎ Venus03:33 – 04:14
- 11☿︎ Mercury04:14 – 04:55
- 12☽︎ Moon04:55 – 05:36
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Friday, 1 August 2025, the Sun rises at 05:34 and sets at 21:24: the day lasts 15h 49m, that is twelve day hours of 1h 19m. The night, until the next sunrise at 05:36, lasts 8h 12m: twelve night hours of 41 min.
Which planet rules the first hour that day?
Venus, from 05:34 to 06:53: 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.