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 Tuesday, 12 May 2026: day of Mars
- Sunrise
- 05:23
- Sunset
- 21:17
- Next sunrise
- 05:21
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:23 – 06:43
- 2☉︎ Sun06:43 – 08:02
- 3♀︎ Venus08:02 – 09:22
- 4☿︎ Mercury09:22 – 10:41
- 5☽︎ Moon10:41 – 12:01
- 6♄︎ Saturn12:01 – 13:20
- 7♃︎ Jupiter13:20 – 14:40
- 8♂︎ Mars14:40 – 15:59
- 9☉︎ Sun15:59 – 17:19
- 10♀︎ Venus17:19 – 18:38
- 11☿︎ Mercury18:38 – 19:58
- 12☽︎ Moon19:58 – 21:17
Night
- 1♄︎ Saturn21:17 – 21:58
- 2♃︎ Jupiter21:58 – 22:38
- 3♂︎ Mars22:38 – 23:18
- 4☉︎ Sun23:18 – 23:59
- 5♀︎ Venus23:59 – 00:39
- 6☿︎ Mercury00:39 – 01:19
- 7☽︎ Moon01:19 – 02:00
- 8♄︎ Saturn02:00 – 02:40
- 9♃︎ Jupiter02:40 – 03:20
- 10♂︎ Mars03:20 – 04:01
- 11☉︎ Sun04:01 – 04:41
- 12♀︎ Venus04:41 – 05:21
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 12 May 2026, the Sun rises at 05:23 and sets at 21:17: the day lasts 15h 54m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 05:21, lasts 8h 04m: twelve night hours of 40 min.
Which planet rules the first hour that day?
Mars, from 05:23 to 06:43: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.