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, 18 September 2026: day of Venus
- Sunrise
- 07:01
- Sunset
- 19:32
- Next sunrise
- 07:03
A day hour lasts 1h 03m; a night hour, 58 min. Local time (Europe/London).
Day
- 1♀︎ Venus07:01 – 08:04
- 2☿︎ Mercury08:04 – 09:06
- 3☽︎ Moon09:06 – 10:09
- 4♄︎ Saturn10:09 – 11:12
- 5♃︎ Jupiter11:12 – 12:14
- 6♂︎ Mars12:14 – 13:17
- 7☉︎ Sun13:17 – 14:19
- 8♀︎ Venus14:19 – 15:22
- 9☿︎ Mercury15:22 – 16:25
- 10☽︎ Moon16:25 – 17:27
- 11♄︎ Saturn17:27 – 18:30
- 12♃︎ Jupiter18:30 – 19:32
Night
- 1♂︎ Mars19:32 – 20:30
- 2☉︎ Sun20:30 – 21:27
- 3♀︎ Venus21:27 – 22:25
- 4☿︎ Mercury22:25 – 23:23
- 5☽︎ Moon23:23 – 00:20
- 6♄︎ Saturn00:20 – 01:18
- 7♃︎ Jupiter01:18 – 02:15
- 8♂︎ Mars02:15 – 03:13
- 9☉︎ Sun03:13 – 04:10
- 10♀︎ Venus04:10 – 05:08
- 11☿︎ Mercury05:08 – 06:06
- 12☽︎ Moon06:06 – 07:03
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Friday, 18 September 2026, the Sun rises at 07:01 and sets at 19:32: the day lasts 12h 31m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 07:03, lasts 11h 31m: twelve night hours of 58 min.
Which planet rules the first hour that day?
Venus, from 07:01 to 08:04: 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.