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 Sunday, 25 October 2026: day of the Sun
- Sunrise
- 06:42
- Sunset
- 17:14
- Next sunrise
- 06:43
A day hour lasts 53 min; a night hour, 1h 07m. Local time (Europe/Rome).
Day
- 1☉︎ Sun06:42 – 07:35
- 2♀︎ Venus07:35 – 08:27
- 3☿︎ Mercury08:27 – 09:20
- 4☽︎ Moon09:20 – 10:13
- 5♄︎ Saturn10:13 – 11:05
- 6♃︎ Jupiter11:05 – 11:58
- 7♂︎ Mars11:58 – 12:51
- 8☉︎ Sun12:51 – 13:43
- 9♀︎ Venus13:43 – 14:36
- 10☿︎ Mercury14:36 – 15:28
- 11☽︎ Moon15:28 – 16:21
- 12♄︎ Saturn16:21 – 17:14
Night
- 1♃︎ Jupiter17:14 – 18:21
- 2♂︎ Mars18:21 – 19:29
- 3☉︎ Sun19:29 – 20:36
- 4♀︎ Venus20:36 – 21:44
- 5☿︎ Mercury21:44 – 22:51
- 6☽︎ Moon22:51 – 23:59
- 7♄︎ Saturn23:59 – 01:06
- 8♃︎ Jupiter01:06 – 02:13
- 9♂︎ Mars02:13 – 03:21
- 10☉︎ Sun03:21 – 04:28
- 11♀︎ Venus04:28 – 05:36
- 12☿︎ Mercury05:36 – 06:43
Questions
How are the planetary hours calculated in Bologna?
On Sunday, 25 October 2026, the Sun rises at 06:42 and sets at 17:14: the day lasts 10h 32m, that is twelve day hours of 53 min. The night, until the next sunrise at 06:43, lasts 13h 30m: twelve night hours of 1h 07m.
Which planet rules the first hour that day?
The Sun, from 06:42 to 07:35: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.