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, 7 September 2026: day of the Moon
- Sunrise
- 06:44
- Sunset
- 19:40
- Next sunrise
- 06:45
A day hour lasts 1h 05m; a night hour, 55 min. Local time (Europe/Rome).
Day
- 1☽︎ Moon06:44 – 07:48
- 2♄︎ Saturn07:48 – 08:53
- 3♃︎ Jupiter08:53 – 09:58
- 4♂︎ Mars09:58 – 11:02
- 5☉︎ Sun11:02 – 12:07
- 6♀︎ Venus12:07 – 13:12
- 7☿︎ Mercury13:12 – 14:16
- 8☽︎ Moon14:16 – 15:21
- 9♄︎ Saturn15:21 – 16:26
- 10♃︎ Jupiter16:26 – 17:31
- 11♂︎ Mars17:31 – 18:35
- 12☉︎ Sun18:35 – 19:40
Night
- 1♀︎ Venus19:40 – 20:35
- 2☿︎ Mercury20:35 – 21:31
- 3☽︎ Moon21:31 – 22:26
- 4♄︎ Saturn22:26 – 23:22
- 5♃︎ Jupiter23:22 – 00:17
- 6♂︎ Mars00:17 – 01:12
- 7☉︎ Sun01:12 – 02:08
- 8♀︎ Venus02:08 – 03:03
- 9☿︎ Mercury03:03 – 03:59
- 10☽︎ Moon03:59 – 04:54
- 11♄︎ Saturn04:54 – 05:49
- 12♃︎ Jupiter05:49 – 06:45
Questions
How are the planetary hours calculated in Bologna?
On Monday, 7 September 2026, the Sun rises at 06:44 and sets at 19:40: the day lasts 12h 56m, that is twelve day hours of 1h 05m. The night, until the next sunrise at 06:45, lasts 11h 05m: twelve night hours of 55 min.
Which planet rules the first hour that day?
The Moon, from 06:44 to 07:48: 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.