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 Monday, 19 October 2026: day of the Moon
- Sunrise
- 07:34
- Sunset
- 18:23
- Next sunrise
- 07:35
A day hour lasts 54 min; a night hour, 1h 06m. Local time (Europe/Rome).
Day
- 1☽︎ Moon07:34 – 08:28
- 2♄︎ Saturn08:28 – 09:22
- 3♃︎ Jupiter09:22 – 10:16
- 4♂︎ Mars10:16 – 11:11
- 5☉︎ Sun11:11 – 12:05
- 6♀︎ Venus12:05 – 12:59
- 7☿︎ Mercury12:59 – 13:53
- 8☽︎ Moon13:53 – 14:47
- 9♄︎ Saturn14:47 – 15:41
- 10♃︎ Jupiter15:41 – 16:35
- 11♂︎ Mars16:35 – 17:29
- 12☉︎ Sun17:29 – 18:23
Night
- 1♀︎ Venus18:23 – 19:29
- 2☿︎ Mercury19:29 – 20:35
- 3☽︎ Moon20:35 – 21:41
- 4♄︎ Saturn21:41 – 22:47
- 5♃︎ Jupiter22:47 – 23:53
- 6♂︎ Mars23:53 – 00:59
- 7☉︎ Sun00:59 – 02:05
- 8♀︎ Venus02:05 – 03:11
- 9☿︎ Mercury03:11 – 04:17
- 10☽︎ Moon04:17 – 05:23
- 11♄︎ Saturn05:23 – 06:29
- 12♃︎ Jupiter06:29 – 07:35
Questions
How are the planetary hours calculated in Bologna?
On Monday, 19 October 2026, the Sun rises at 07:34 and sets at 18:23: the day lasts 10h 49m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:35, lasts 13h 12m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
The Moon, from 07:34 to 08:28: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.