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, 16 October 2026: day of Venus
- Sunrise
- 07:30
- Sunset
- 18:28
- Next sunrise
- 07:32
A day hour lasts 55 min; a night hour, 1h 05m. Local time (Europe/Rome).
Day
- 1♀︎ Venus07:30 – 08:25
- 2☿︎ Mercury08:25 – 09:20
- 3☽︎ Moon09:20 – 10:15
- 4♄︎ Saturn10:15 – 11:10
- 5♃︎ Jupiter11:10 – 12:05
- 6♂︎ Mars12:05 – 12:59
- 7☉︎ Sun12:59 – 13:54
- 8♀︎ Venus13:54 – 14:49
- 9☿︎ Mercury14:49 – 15:44
- 10☽︎ Moon15:44 – 16:39
- 11♄︎ Saturn16:39 – 17:34
- 12♃︎ Jupiter17:34 – 18:28
Night
- 1♂︎ Mars18:28 – 19:34
- 2☉︎ Sun19:34 – 20:39
- 3♀︎ Venus20:39 – 21:44
- 4☿︎ Mercury21:44 – 22:49
- 5☽︎ Moon22:49 – 23:55
- 6♄︎ Saturn23:55 – 01:00
- 7♃︎ Jupiter01:00 – 02:05
- 8♂︎ Mars02:05 – 03:11
- 9☉︎ Sun03:11 – 04:16
- 10♀︎ Venus04:16 – 05:21
- 11☿︎ Mercury05:21 – 06:26
- 12☽︎ Moon06:26 – 07:32
Questions
How are the planetary hours calculated in Bologna?
On Friday, 16 October 2026, the Sun rises at 07:30 and sets at 18:28: the day lasts 10h 58m, that is twelve day hours of 55 min. The night, until the next sunrise at 07:32, lasts 13h 03m: twelve night hours of 1h 05m.
Which planet rules the first hour that day?
Venus, from 07:30 to 08:25: 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.