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, 25 January 2027: day of the Moon
- Sunrise
- 07:40
- Sunset
- 17:13
- Next sunrise
- 07:39
A day hour lasts 48 min; a night hour, 1h 12m. Local time (Europe/Rome).
Day
- 1☽︎ Moon07:40 – 08:28
- 2♄︎ Saturn08:28 – 09:16
- 3♃︎ Jupiter09:16 – 10:03
- 4♂︎ Mars10:03 – 10:51
- 5☉︎ Sun10:51 – 11:39
- 6♀︎ Venus11:39 – 12:27
- 7☿︎ Mercury12:27 – 13:14
- 8☽︎ Moon13:14 – 14:02
- 9♄︎ Saturn14:02 – 14:50
- 10♃︎ Jupiter14:50 – 15:38
- 11♂︎ Mars15:38 – 16:25
- 12☉︎ Sun16:25 – 17:13
Night
- 1♀︎ Venus17:13 – 18:25
- 2☿︎ Mercury18:25 – 19:37
- 3☽︎ Moon19:37 – 20:50
- 4♄︎ Saturn20:50 – 22:02
- 5♃︎ Jupiter22:02 – 23:14
- 6♂︎ Mars23:14 – 00:26
- 7☉︎ Sun00:26 – 01:38
- 8♀︎ Venus01:38 – 02:51
- 9☿︎ Mercury02:51 – 04:03
- 10☽︎ Moon04:03 – 05:15
- 11♄︎ Saturn05:15 – 06:27
- 12♃︎ Jupiter06:27 – 07:39
Questions
How are the planetary hours calculated in Bologna?
On Monday, 25 January 2027, the Sun rises at 07:40 and sets at 17:13: the day lasts 9h 33m, that is twelve day hours of 48 min. The night, until the next sunrise at 07:39, lasts 14h 26m: twelve night hours of 1h 12m.
Which planet rules the first hour that day?
The Moon, from 07:40 to 08:28: 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.