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, 21 July 2026: day of Mars
- Sunrise
- 05:16
- Sunset
- 21:43
- Next sunrise
- 05:17
A day hour lasts 1h 22m; a night hour, 38 min. Local time (Europe/London).
Day
- 1♂︎ Mars05:16 – 06:38
- 2☉︎ Sun06:38 – 08:00
- 3♀︎ Venus08:00 – 09:22
- 4☿︎ Mercury09:22 – 10:45
- 5☽︎ Moon10:45 – 12:07
- 6♄︎ Saturn12:07 – 13:29
- 7♃︎ Jupiter13:29 – 14:51
- 8♂︎ Mars14:51 – 16:14
- 9☉︎ Sun16:14 – 17:36
- 10♀︎ Venus17:36 – 18:58
- 11☿︎ Mercury18:58 – 20:20
- 12☽︎ Moon20:20 – 21:43
Night
- 1♄︎ Saturn21:43 – 22:21
- 2♃︎ Jupiter22:21 – 22:58
- 3♂︎ Mars22:58 – 23:36
- 4☉︎ Sun23:36 – 00:14
- 5♀︎ Venus00:14 – 00:52
- 6☿︎ Mercury00:52 – 01:30
- 7☽︎ Moon01:30 – 02:08
- 8♄︎ Saturn02:08 – 02:46
- 9♃︎ Jupiter02:46 – 03:24
- 10♂︎ Mars03:24 – 04:01
- 11☉︎ Sun04:01 – 04:39
- 12♀︎ Venus04:39 – 05:17
Other cities · United Kingdom
Questions
How are the planetary hours calculated in Belfast?
On Tuesday, 21 July 2026, the Sun rises at 05:16 and sets at 21:43: the day lasts 16h 27m, that is twelve day hours of 1h 22m. The night, until the next sunrise at 05:17, lasts 7h 35m: twelve night hours of 38 min.
Which planet rules the first hour that day?
Mars, from 05:16 to 06:38: 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.