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, 9 September 2025: day of Mars
- Sunrise
- 06:45
- Sunset
- 19:54
- Next sunrise
- 06:47
A day hour lasts 1h 06m; a night hour, 54 min. Local time (Europe/London).
Day
- 1♂︎ Mars06:45 – 07:51
- 2☉︎ Sun07:51 – 08:57
- 3♀︎ Venus08:57 – 10:03
- 4☿︎ Mercury10:03 – 11:08
- 5☽︎ Moon11:08 – 12:14
- 6♄︎ Saturn12:14 – 13:20
- 7♃︎ Jupiter13:20 – 14:26
- 8♂︎ Mars14:26 – 15:31
- 9☉︎ Sun15:31 – 16:37
- 10♀︎ Venus16:37 – 17:43
- 11☿︎ Mercury17:43 – 18:49
- 12☽︎ Moon18:49 – 19:54
Night
- 1♄︎ Saturn19:54 – 20:49
- 2♃︎ Jupiter20:49 – 21:43
- 3♂︎ Mars21:43 – 22:38
- 4☉︎ Sun22:38 – 23:32
- 5♀︎ Venus23:32 – 00:26
- 6☿︎ Mercury00:26 – 01:21
- 7☽︎ Moon01:21 – 02:15
- 8♄︎ Saturn02:15 – 03:10
- 9♃︎ Jupiter03:10 – 04:04
- 10♂︎ Mars04:04 – 04:58
- 11☉︎ Sun04:58 – 05:53
- 12♀︎ Venus05:53 – 06:47
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 9 September 2025, the Sun rises at 06:45 and sets at 19:54: the day lasts 13h 09m, that is twelve day hours of 1h 06m. The night, until the next sunrise at 06:47, lasts 10h 53m: twelve night hours of 54 min.
Which planet rules the first hour that day?
Mars, from 06:45 to 07:51: 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.