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, 23 October 2026: day of Venus
- Sunrise
- 07:39
- Sunset
- 18:17
- Next sunrise
- 07:41
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/Rome).
Day
- 1♀︎ Venus07:39 – 08:33
- 2☿︎ Mercury08:33 – 09:26
- 3☽︎ Moon09:26 – 10:19
- 4♄︎ Saturn10:19 – 11:12
- 5♃︎ Jupiter11:12 – 12:05
- 6♂︎ Mars12:05 – 12:58
- 7☉︎ Sun12:58 – 13:51
- 8♀︎ Venus13:51 – 14:44
- 9☿︎ Mercury14:44 – 15:38
- 10☽︎ Moon15:38 – 16:31
- 11♄︎ Saturn16:31 – 17:24
- 12♃︎ Jupiter17:24 – 18:17
Night
- 1♂︎ Mars18:17 – 19:24
- 2☉︎ Sun19:24 – 20:31
- 3♀︎ Venus20:31 – 21:38
- 4☿︎ Mercury21:38 – 22:45
- 5☽︎ Moon22:45 – 23:52
- 6♄︎ Saturn23:52 – 00:59
- 7♃︎ Jupiter00:59 – 02:06
- 8♂︎ Mars02:06 – 03:13
- 9☉︎ Sun03:13 – 04:20
- 10♀︎ Venus04:20 – 05:27
- 11☿︎ Mercury05:27 – 06:34
- 12☽︎ Moon06:34 – 07:41
Questions
How are the planetary hours calculated in Bologna?
On Friday, 23 October 2026, the Sun rises at 07:39 and sets at 18:17: the day lasts 10h 38m, that is twelve day hours of 53 min. The night, until the next sunrise at 07:41, lasts 13h 24m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
Venus, from 07:39 to 08:33: 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.