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 Friday, 9 October 2026: day of Venus
- Sunrise
- 07:22
- Sunset
- 18:41
- Next sunrise
- 07:23
A day hour lasts 57 min; a night hour, 1h 04m. Local time (Europe/Rome).
Day
- 1♀︎ Venus07:22 – 08:18
- 2☿︎ Mercury08:18 – 09:15
- 3☽︎ Moon09:15 – 10:11
- 4♄︎ Saturn10:11 – 11:08
- 5♃︎ Jupiter11:08 – 12:04
- 6♂︎ Mars12:04 – 13:01
- 7☉︎ Sun13:01 – 13:58
- 8♀︎ Venus13:58 – 14:54
- 9☿︎ Mercury14:54 – 15:51
- 10☽︎ Moon15:51 – 16:47
- 11♄︎ Saturn16:47 – 17:44
- 12♃︎ Jupiter17:44 – 18:41
Night
- 1♂︎ Mars18:41 – 19:44
- 2☉︎ Sun19:44 – 20:48
- 3♀︎ Venus20:48 – 21:51
- 4☿︎ Mercury21:51 – 22:55
- 5☽︎ Moon22:55 – 23:58
- 6♄︎ Saturn23:58 – 01:02
- 7♃︎ Jupiter01:02 – 02:05
- 8♂︎ Mars02:05 – 03:09
- 9☉︎ Sun03:09 – 04:12
- 10♀︎ Venus04:12 – 05:16
- 11☿︎ Mercury05:16 – 06:19
- 12☽︎ Moon06:19 – 07:23
Questions
How are the planetary hours calculated in Bologna?
On Friday, 9 October 2026, the Sun rises at 07:22 and sets at 18:41: the day lasts 11h 19m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:23, lasts 12h 42m: twelve night hours of 1h 04m.
Which planet rules the first hour that day?
Venus, from 07:22 to 08:18: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.