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 Sunday, 6 June 2027: day of the Sun
- Sunrise
- 05:31
- Sunset
- 20:55
- Next sunrise
- 05:30
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Rome).
Day
- 1☉︎ Sun05:31 – 06:48
- 2♀︎ Venus06:48 – 08:05
- 3☿︎ Mercury08:05 – 09:22
- 4☽︎ Moon09:22 – 10:39
- 5♄︎ Saturn10:39 – 11:56
- 6♃︎ Jupiter11:56 – 13:13
- 7♂︎ Mars13:13 – 14:30
- 8☉︎ Sun14:30 – 15:47
- 9♀︎ Venus15:47 – 17:04
- 10☿︎ Mercury17:04 – 18:21
- 11☽︎ Moon18:21 – 19:38
- 12♄︎ Saturn19:38 – 20:55
Night
- 1♃︎ Jupiter20:55 – 21:38
- 2♂︎ Mars21:38 – 22:21
- 3☉︎ Sun22:21 – 23:04
- 4♀︎ Venus23:04 – 23:47
- 5☿︎ Mercury23:47 – 00:30
- 6☽︎ Moon00:30 – 01:13
- 7♄︎ Saturn01:13 – 01:56
- 8♃︎ Jupiter01:56 – 02:39
- 9♂︎ Mars02:39 – 03:21
- 10☉︎ Sun03:21 – 04:04
- 11♀︎ Venus04:04 – 04:47
- 12☿︎ Mercury04:47 – 05:30
Questions
How are the planetary hours calculated in Bologna?
On Sunday, 6 June 2027, the Sun rises at 05:31 and sets at 20:55: the day lasts 15h 25m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:30, lasts 8h 35m: twelve night hours of 43 min.
Which planet rules the first hour that day?
The Sun, from 05:31 to 06:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.