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, 27 June 2026: day of Saturn
- Sunrise
- 05:31
- Sunset
- 21:03
- Next sunrise
- 05:32
A day hour lasts 1h 18m; a night hour, 42 min. Local time (Europe/Rome).
Day
- 1♄︎ Saturn05:31 – 06:49
- 2♃︎ Jupiter06:49 – 08:07
- 3♂︎ Mars08:07 – 09:24
- 4☉︎ Sun09:24 – 10:42
- 5♀︎ Venus10:42 – 12:00
- 6☿︎ Mercury12:00 – 13:17
- 7☽︎ Moon13:17 – 14:35
- 8♄︎ Saturn14:35 – 15:52
- 9♃︎ Jupiter15:52 – 17:10
- 10♂︎ Mars17:10 – 18:28
- 11☉︎ Sun18:28 – 19:45
- 12♀︎ Venus19:45 – 21:03
Night
- 1☿︎ Mercury21:03 – 21:45
- 2☽︎ Moon21:45 – 22:28
- 3♄︎ Saturn22:28 – 23:10
- 4♃︎ Jupiter23:10 – 23:53
- 5♂︎ Mars23:53 – 00:35
- 6☉︎ Sun00:35 – 01:17
- 7♀︎ Venus01:17 – 02:00
- 8☿︎ Mercury02:00 – 02:42
- 9☽︎ Moon02:42 – 03:25
- 10♄︎ Saturn03:25 – 04:07
- 11♃︎ Jupiter04:07 – 04:49
- 12♂︎ Mars04:49 – 05:32
Questions
How are the planetary hours calculated in Bologna?
On Saturday, 27 June 2026, the Sun rises at 05:31 and sets at 21:03: the day lasts 15h 32m, that is twelve day hours of 1h 18m. The night, until the next sunrise at 05:32, lasts 8h 29m: twelve night hours of 42 min.
Which planet rules the first hour that day?
Saturn, from 05:31 to 06:49: 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.