Planetary hours
in Bologna.
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 Saturday, 12 June 2027: day of Saturn
- Sunrise
- 05:29
- Sunset
- 20:59
- Next sunrise
- 05:29
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/Rome).
Day
- 1♄︎ Saturn05:29 – 06:47
- 2♃︎ Jupiter06:47 – 08:04
- 3♂︎ Mars08:04 – 09:22
- 4☉︎ Sun09:22 – 10:39
- 5♀︎ Venus10:39 – 11:57
- 6☿︎ Mercury11:57 – 13:14
- 7☽︎ Moon13:14 – 14:32
- 8♄︎ Saturn14:32 – 15:49
- 9♃︎ Jupiter15:49 – 17:07
- 10♂︎ Mars17:07 – 18:24
- 11☉︎ Sun18:24 – 19:42
- 12♀︎ Venus19:42 – 20:59
Night
- 1☿︎ Mercury20:59 – 21:42
- 2☽︎ Moon21:42 – 22:24
- 3♄︎ Saturn22:24 – 23:07
- 4♃︎ Jupiter23:07 – 23:49
- 5♂︎ Mars23:49 – 00:32
- 6☉︎ Sun00:32 – 01:14
- 7♀︎ Venus01:14 – 01:57
- 8☿︎ Mercury01:57 – 02:39
- 9☽︎ Moon02:39 – 03:21
- 10♄︎ Saturn03:21 – 04:04
- 11♃︎ Jupiter04:04 – 04:46
- 12♂︎ Mars04:46 – 05:29
Questions
How are the planetary hours calculated in Bologna?
On Saturday, 12 June 2027, the Sun rises at 05:29 and sets at 20:59: the day lasts 15h 30m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 05:29, lasts 8h 30m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Saturn, from 05:29 to 06:47: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.