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 Thursday, 21 May 2026: day of Jupiter
- Sunrise
- 05:08
- Sunset
- 21:33
- Next sunrise
- 05:07
A day hour lasts 1h 22m; a night hour, 38 min. Local time (Europe/London).
Day
- 1♃︎ Jupiter05:08 – 06:30
- 2♂︎ Mars06:30 – 07:52
- 3☉︎ Sun07:52 – 09:14
- 4♀︎ Venus09:14 – 10:36
- 5☿︎ Mercury10:36 – 11:58
- 6☽︎ Moon11:58 – 13:20
- 7♄︎ Saturn13:20 – 14:42
- 8♃︎ Jupiter14:42 – 16:04
- 9♂︎ Mars16:04 – 17:27
- 10☉︎ Sun17:27 – 18:49
- 11♀︎ Venus18:49 – 20:11
- 12☿︎ Mercury20:11 – 21:33
Night
- 1☽︎ Moon21:33 – 22:11
- 2♄︎ Saturn22:11 – 22:48
- 3♃︎ Jupiter22:48 – 23:26
- 4♂︎ Mars23:26 – 00:04
- 5☉︎ Sun00:04 – 00:42
- 6♀︎ Venus00:42 – 01:20
- 7☿︎ Mercury01:20 – 01:57
- 8☽︎ Moon01:57 – 02:35
- 9♄︎ Saturn02:35 – 03:13
- 10♃︎ Jupiter03:13 – 03:51
- 11♂︎ Mars03:51 – 04:29
- 12☉︎ Sun04:29 – 05:07
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Thursday, 21 May 2026, the Sun rises at 05:08 and sets at 21:33: the day lasts 16h 25m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 05:07, lasts 7h 34m: twelve night hours of 38 min.
Which planet rules the first hour that day?
Jupiter, from 05:08 to 06:30: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter 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.