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 Saturday, 21 November 2026: day of Saturn
- Sunrise
- 07:18
- Sunset
- 16:42
- Next sunrise
- 07:19
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Europe/Rome).
Day
- 1♄︎ Saturn07:18 – 08:05
- 2♃︎ Jupiter08:05 – 08:52
- 3♂︎ Mars08:52 – 09:39
- 4☉︎ Sun09:39 – 10:26
- 5♀︎ Venus10:26 – 11:13
- 6☿︎ Mercury11:13 – 12:00
- 7☽︎ Moon12:00 – 12:47
- 8♄︎ Saturn12:47 – 13:34
- 9♃︎ Jupiter13:34 – 14:21
- 10♂︎ Mars14:21 – 15:08
- 11☉︎ Sun15:08 – 15:55
- 12♀︎ Venus15:55 – 16:42
Night
- 1☿︎ Mercury16:42 – 17:55
- 2☽︎ Moon17:55 – 19:08
- 3♄︎ Saturn19:08 – 20:21
- 4♃︎ Jupiter20:21 – 21:34
- 5♂︎ Mars21:34 – 22:47
- 6☉︎ Sun22:47 – 00:00
- 7♀︎ Venus00:00 – 01:14
- 8☿︎ Mercury01:14 – 02:27
- 9☽︎ Moon02:27 – 03:40
- 10♄︎ Saturn03:40 – 04:53
- 11♃︎ Jupiter04:53 – 06:06
- 12♂︎ Mars06:06 – 07:19
Questions
How are the planetary hours calculated in Bologna?
On Saturday, 21 November 2026, the Sun rises at 07:18 and sets at 16:42: the day lasts 9h 23m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:19, lasts 14h 38m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
Saturn, from 07:18 to 08:05: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn 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.