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, 13 January 2026: day of Mars
- Sunrise
- 08:39
- Sunset
- 16:26
- Next sunrise
- 08:38
A day hour lasts 39 min; a night hour, 1h 21m. Local time (Europe/London).
Day
- 1♂︎ Mars08:39 – 09:18
- 2☉︎ Sun09:18 – 09:57
- 3♀︎ Venus09:57 – 10:35
- 4☿︎ Mercury10:35 – 11:14
- 5☽︎ Moon11:14 – 11:53
- 6♄︎ Saturn11:53 – 12:32
- 7♃︎ Jupiter12:32 – 13:11
- 8♂︎ Mars13:11 – 13:50
- 9☉︎ Sun13:50 – 14:29
- 10♀︎ Venus14:29 – 15:08
- 11☿︎ Mercury15:08 – 15:47
- 12☽︎ Moon15:47 – 16:26
Night
- 1♄︎ Saturn16:26 – 17:47
- 2♃︎ Jupiter17:47 – 19:08
- 3♂︎ Mars19:08 – 20:29
- 4☉︎ Sun20:29 – 21:50
- 5♀︎ Venus21:50 – 23:11
- 6☿︎ Mercury23:11 – 00:32
- 7☽︎ Moon00:32 – 01:53
- 8♄︎ Saturn01:53 – 03:14
- 9♃︎ Jupiter03:14 – 04:35
- 10♂︎ Mars04:35 – 05:56
- 11☉︎ Sun05:56 – 07:17
- 12♀︎ Venus07:17 – 08:38
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 13 January 2026, the Sun rises at 08:39 and sets at 16:26: the day lasts 7h 47m, that is twelve day hours of 39 min. The night, until the next sunrise at 08:38, lasts 16h 12m: twelve night hours of 1h 21m.
Which planet rules the first hour that day?
Mars, from 08:39 to 09:18: 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.