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, 26 September 2025: day of Venus
- Sunrise
- 07:16
- Sunset
- 19:11
- Next sunrise
- 07:18
A day hour lasts 1h 00m; a night hour, 1h 01m. Local time (Europe/London).
Day
- 1♀︎ Venus07:16 – 08:16
- 2☿︎ Mercury08:16 – 09:16
- 3☽︎ Moon09:16 – 10:15
- 4♄︎ Saturn10:15 – 11:15
- 5♃︎ Jupiter11:15 – 12:14
- 6♂︎ Mars12:14 – 13:14
- 7☉︎ Sun13:14 – 14:13
- 8♀︎ Venus14:13 – 15:13
- 9☿︎ Mercury15:13 – 16:13
- 10☽︎ Moon16:13 – 17:12
- 11♄︎ Saturn17:12 – 18:12
- 12♃︎ Jupiter18:12 – 19:11
Night
- 1♂︎ Mars19:11 – 20:12
- 2☉︎ Sun20:12 – 21:13
- 3♀︎ Venus21:13 – 22:13
- 4☿︎ Mercury22:13 – 23:14
- 5☽︎ Moon23:14 – 00:14
- 6♄︎ Saturn00:14 – 01:15
- 7♃︎ Jupiter01:15 – 02:15
- 8♂︎ Mars02:15 – 03:16
- 9☉︎ Sun03:16 – 04:17
- 10♀︎ Venus04:17 – 05:17
- 11☿︎ Mercury05:17 – 06:18
- 12☽︎ Moon06:18 – 07:18
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Friday, 26 September 2025, the Sun rises at 07:16 and sets at 19:11: the day lasts 11h 55m, that is twelve day hours of 1h 00m. The night, until the next sunrise at 07:18, lasts 12h 07m: twelve night hours of 1h 01m.
Which planet rules the first hour that day?
Venus, from 07:16 to 08:16: 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.