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, 15 December 2026: day of Mars
- Sunrise
- 08:39
- Sunset
- 15:57
- Next sunrise
- 08:40
A day hour lasts 36 min; a night hour, 1h 24m. Local time (Europe/London).
Day
- 1♂︎ Mars08:39 – 09:16
- 2☉︎ Sun09:16 – 09:52
- 3♀︎ Venus09:52 – 10:29
- 4☿︎ Mercury10:29 – 11:05
- 5☽︎ Moon11:05 – 11:42
- 6♄︎ Saturn11:42 – 12:18
- 7♃︎ Jupiter12:18 – 12:55
- 8♂︎ Mars12:55 – 13:31
- 9☉︎ Sun13:31 – 14:08
- 10♀︎ Venus14:08 – 14:44
- 11☿︎ Mercury14:44 – 15:21
- 12☽︎ Moon15:21 – 15:57
Night
- 1♄︎ Saturn15:57 – 17:21
- 2♃︎ Jupiter17:21 – 18:44
- 3♂︎ Mars18:44 – 20:08
- 4☉︎ Sun20:08 – 21:32
- 5♀︎ Venus21:32 – 22:55
- 6☿︎ Mercury22:55 – 00:19
- 7☽︎ Moon00:19 – 01:42
- 8♄︎ Saturn01:42 – 03:06
- 9♃︎ Jupiter03:06 – 04:30
- 10♂︎ Mars04:30 – 05:53
- 11☉︎ Sun05:53 – 07:17
- 12♀︎ Venus07:17 – 08:40
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 15 December 2026, the Sun rises at 08:39 and sets at 15:57: the day lasts 7h 18m, that is twelve day hours of 36 min. The night, until the next sunrise at 08:40, lasts 16h 43m: twelve night hours of 1h 24m.
Which planet rules the first hour that day?
Mars, from 08:39 to 09:16: 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.