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 Monday, 18 January 2027: day of the Moon
- Sunrise
- 07:46
- Sunset
- 17:04
- Next sunrise
- 07:45
A day hour lasts 47 min; a night hour, 1h 13m. Local time (Europe/Rome).
Day
- 1☽︎ Moon07:46 – 08:32
- 2♄︎ Saturn08:32 – 09:19
- 3♃︎ Jupiter09:19 – 10:05
- 4♂︎ Mars10:05 – 10:52
- 5☉︎ Sun10:52 – 11:38
- 6♀︎ Venus11:38 – 12:25
- 7☿︎ Mercury12:25 – 13:11
- 8☽︎ Moon13:11 – 13:58
- 9♄︎ Saturn13:58 – 14:44
- 10♃︎ Jupiter14:44 – 15:31
- 11♂︎ Mars15:31 – 16:17
- 12☉︎ Sun16:17 – 17:04
Night
- 1♀︎ Venus17:04 – 18:17
- 2☿︎ Mercury18:17 – 19:31
- 3☽︎ Moon19:31 – 20:44
- 4♄︎ Saturn20:44 – 21:57
- 5♃︎ Jupiter21:57 – 23:11
- 6♂︎ Mars23:11 – 00:24
- 7☉︎ Sun00:24 – 01:38
- 8♀︎ Venus01:38 – 02:51
- 9☿︎ Mercury02:51 – 04:05
- 10☽︎ Moon04:05 – 05:18
- 11♄︎ Saturn05:18 – 06:31
- 12♃︎ Jupiter06:31 – 07:45
Questions
How are the planetary hours calculated in Bologna?
On Monday, 18 January 2027, the Sun rises at 07:46 and sets at 17:04: the day lasts 9h 18m, that is twelve day hours of 47 min. The night, until the next sunrise at 07:45, lasts 14h 41m: twelve night hours of 1h 13m.
Which planet rules the first hour that day?
The Moon, from 07:46 to 08:32: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Saturn, Jupiter, Mars, the Sun, Venus, Mercury, then the Moon 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.