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, 31 October 2026: day of Saturn
- Sunrise
- 06:50
- Sunset
- 17:05
- Next sunrise
- 06:51
A day hour lasts 51 min; a night hour, 1h 09m. Local time (Europe/Rome).
Day
- 1♄︎ Saturn06:50 – 07:41
- 2♃︎ Jupiter07:41 – 08:32
- 3♂︎ Mars08:32 – 09:24
- 4☉︎ Sun09:24 – 10:15
- 5♀︎ Venus10:15 – 11:06
- 6☿︎ Mercury11:06 – 11:57
- 7☽︎ Moon11:57 – 12:49
- 8♄︎ Saturn12:49 – 13:40
- 9♃︎ Jupiter13:40 – 14:31
- 10♂︎ Mars14:31 – 15:22
- 11☉︎ Sun15:22 – 16:14
- 12♀︎ Venus16:14 – 17:05
Night
- 1☿︎ Mercury17:05 – 18:14
- 2☽︎ Moon18:14 – 19:23
- 3♄︎ Saturn19:23 – 20:32
- 4♃︎ Jupiter20:32 – 21:40
- 5♂︎ Mars21:40 – 22:49
- 6☉︎ Sun22:49 – 23:58
- 7♀︎ Venus23:58 – 01:07
- 8☿︎ Mercury01:07 – 02:16
- 9☽︎ Moon02:16 – 03:25
- 10♄︎ Saturn03:25 – 04:34
- 11♃︎ Jupiter04:34 – 05:42
- 12♂︎ Mars05:42 – 06:51
Questions
How are the planetary hours calculated in Bologna?
On Saturday, 31 October 2026, the Sun rises at 06:50 and sets at 17:05: the day lasts 10h 15m, that is twelve day hours of 51 min. The night, until the next sunrise at 06:51, lasts 13h 46m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Saturn, from 06:50 to 07:41: 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.