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, 25 July 2027: day of the Sun
- Sunrise
- 05:53
- Sunset
- 20:48
- Next sunrise
- 05:54
A day hour lasts 1h 15m; a night hour, 46 min. Local time (Europe/Rome).
Day
- 1☉︎ Sun05:53 – 07:08
- 2♀︎ Venus07:08 – 08:22
- 3☿︎ Mercury08:22 – 09:37
- 4☽︎ Moon09:37 – 10:51
- 5♄︎ Saturn10:51 – 12:06
- 6♃︎ Jupiter12:06 – 13:20
- 7♂︎ Mars13:20 – 14:35
- 8☉︎ Sun14:35 – 15:50
- 9♀︎ Venus15:50 – 17:04
- 10☿︎ Mercury17:04 – 18:19
- 11☽︎ Moon18:19 – 19:33
- 12♄︎ Saturn19:33 – 20:48
Night
- 1♃︎ Jupiter20:48 – 21:33
- 2♂︎ Mars21:33 – 22:19
- 3☉︎ Sun22:19 – 23:04
- 4♀︎ Venus23:04 – 23:50
- 5☿︎ Mercury23:50 – 00:35
- 6☽︎ Moon00:35 – 01:21
- 7♄︎ Saturn01:21 – 02:06
- 8♃︎ Jupiter02:06 – 02:52
- 9♂︎ Mars02:52 – 03:37
- 10☉︎ Sun03:37 – 04:23
- 11♀︎ Venus04:23 – 05:08
- 12☿︎ Mercury05:08 – 05:54
Questions
How are the planetary hours calculated in Bologna?
On Sunday, 25 July 2027, the Sun rises at 05:53 and sets at 20:48: the day lasts 14h 55m, that is twelve day hours of 1h 15m. The night, until the next sunrise at 05:54, lasts 9h 06m: twelve night hours of 46 min.
Which planet rules the first hour that day?
The Sun, from 05:53 to 07:08: 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.