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 Wednesday, 20 May 2026: day of Mercury
- Sunrise
- 05:10
- Sunset
- 21:31
- Next sunrise
- 05:08
A day hour lasts 1h 22m; a night hour, 38 min. Local time (Europe/London).
Day
- 1☿︎ Mercury05:10 – 06:31
- 2☽︎ Moon06:31 – 07:53
- 3♄︎ Saturn07:53 – 09:15
- 4♃︎ Jupiter09:15 – 10:37
- 5♂︎ Mars10:37 – 11:59
- 6☉︎ Sun11:59 – 13:20
- 7♀︎ Venus13:20 – 14:42
- 8☿︎ Mercury14:42 – 16:04
- 9☽︎ Moon16:04 – 17:26
- 10♄︎ Saturn17:26 – 18:47
- 11♃︎ Jupiter18:47 – 20:09
- 12♂︎ Mars20:09 – 21:31
Night
- 1☉︎ Sun21:31 – 22:09
- 2♀︎ Venus22:09 – 22:47
- 3☿︎ Mercury22:47 – 23:25
- 4☽︎ Moon23:25 – 00:03
- 5♄︎ Saturn00:03 – 00:41
- 6♃︎ Jupiter00:41 – 01:20
- 7♂︎ Mars01:20 – 01:58
- 8☉︎ Sun01:58 – 02:36
- 9♀︎ Venus02:36 – 03:14
- 10☿︎ Mercury03:14 – 03:52
- 11☽︎ Moon03:52 – 04:30
- 12♄︎ Saturn04:30 – 05:08
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Wednesday, 20 May 2026, the Sun rises at 05:10 and sets at 21:31: the day lasts 16h 22m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 05:08, lasts 7h 37m: twelve night hours of 38 min.
Which planet rules the first hour that day?
Mercury, from 05:10 to 06:31: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.