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 Friday, 21 May 2027: day of Venus
- Sunrise
- 05:41
- Sunset
- 20:41
- Next sunrise
- 05:40
A day hour lasts 1h 15m; a night hour, 45 min. Local time (Europe/Rome).
Day
- 1♀︎ Venus05:41 – 06:56
- 2☿︎ Mercury06:56 – 08:11
- 3☽︎ Moon08:11 – 09:26
- 4♄︎ Saturn09:26 – 10:41
- 5♃︎ Jupiter10:41 – 11:56
- 6♂︎ Mars11:56 – 13:11
- 7☉︎ Sun13:11 – 14:26
- 8♀︎ Venus14:26 – 15:41
- 9☿︎ Mercury15:41 – 16:56
- 10☽︎ Moon16:56 – 18:11
- 11♄︎ Saturn18:11 – 19:26
- 12♃︎ Jupiter19:26 – 20:41
Night
- 1♂︎ Mars20:41 – 21:26
- 2☉︎ Sun21:26 – 22:11
- 3♀︎ Venus22:11 – 22:56
- 4☿︎ Mercury22:56 – 23:41
- 5☽︎ Moon23:41 – 00:26
- 6♄︎ Saturn00:26 – 01:11
- 7♃︎ Jupiter01:11 – 01:56
- 8♂︎ Mars01:56 – 02:40
- 9☉︎ Sun02:40 – 03:25
- 10♀︎ Venus03:25 – 04:10
- 11☿︎ Mercury04:10 – 04:55
- 12☽︎ Moon04:55 – 05:40
Questions
How are the planetary hours calculated in Bologna?
On Friday, 21 May 2027, the Sun rises at 05:41 and sets at 20:41: the day lasts 15h 00m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 05:40, lasts 8h 59m: twelve night hours of 45 min.
Which planet rules the first hour that day?
Venus, from 05:41 to 06:56: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.