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, 30 September 2025: day of Mars
- Sunrise
- 07:24
- Sunset
- 19:01
- Next sunrise
- 07:26
A day hour lasts 58 min; a night hour, 1h 02m. Local time (Europe/London).
Day
- 1♂︎ Mars07:24 – 08:22
- 2☉︎ Sun08:22 – 09:20
- 3♀︎ Venus09:20 – 10:18
- 4☿︎ Mercury10:18 – 11:16
- 5☽︎ Moon11:16 – 12:14
- 6♄︎ Saturn12:14 – 13:13
- 7♃︎ Jupiter13:13 – 14:11
- 8♂︎ Mars14:11 – 15:09
- 9☉︎ Sun15:09 – 16:07
- 10♀︎ Venus16:07 – 17:05
- 11☿︎ Mercury17:05 – 18:03
- 12☽︎ Moon18:03 – 19:01
Night
- 1♄︎ Saturn19:01 – 20:03
- 2♃︎ Jupiter20:03 – 21:05
- 3♂︎ Mars21:05 – 22:07
- 4☉︎ Sun22:07 – 23:09
- 5♀︎ Venus23:09 – 00:11
- 6☿︎ Mercury00:11 – 01:14
- 7☽︎ Moon01:14 – 02:16
- 8♄︎ Saturn02:16 – 03:18
- 9♃︎ Jupiter03:18 – 04:20
- 10♂︎ Mars04:20 – 05:22
- 11☉︎ Sun05:22 – 06:24
- 12♀︎ Venus06:24 – 07:26
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 30 September 2025, the Sun rises at 07:24 and sets at 19:01: the day lasts 11h 37m, that is twelve day hours of 58 min. The night, until the next sunrise at 07:26, lasts 12h 24m: twelve night hours of 1h 02m.
Which planet rules the first hour that day?
Mars, from 07:24 to 08:22: 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.