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 Tuesday, 3 June 2025: day of Mars
- Sunrise
- 05:32
- Sunset
- 20:54
- Next sunrise
- 05:31
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Rome).
Day
- 1♂︎ Mars05:32 – 06:48
- 2☉︎ Sun06:48 – 08:05
- 3♀︎ Venus08:05 – 09:22
- 4☿︎ Mercury09:22 – 10:39
- 5☽︎ Moon10:39 – 11:56
- 6♄︎ Saturn11:56 – 13:13
- 7♃︎ Jupiter13:13 – 14:29
- 8♂︎ Mars14:29 – 15:46
- 9☉︎ Sun15:46 – 17:03
- 10♀︎ Venus17:03 – 18:20
- 11☿︎ Mercury18:20 – 19:37
- 12☽︎ Moon19:37 – 20:54
Night
- 1♄︎ Saturn20:54 – 21:37
- 2♃︎ Jupiter21:37 – 22:20
- 3♂︎ Mars22:20 – 23:03
- 4☉︎ Sun23:03 – 23:46
- 5♀︎ Venus23:46 – 00:29
- 6☿︎ Mercury00:29 – 01:12
- 7☽︎ Moon01:12 – 01:55
- 8♄︎ Saturn01:55 – 02:39
- 9♃︎ Jupiter02:39 – 03:22
- 10♂︎ Mars03:22 – 04:05
- 11☉︎ Sun04:05 – 04:48
- 12♀︎ Venus04:48 – 05:31
Questions
How are the planetary hours calculated in Bologna?
On Tuesday, 3 June 2025, the Sun rises at 05:32 and sets at 20:54: the day lasts 15h 22m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:31, lasts 8h 38m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Mars, from 05:32 to 06:48: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Sun, Venus, Mercury, the Moon, Saturn, Jupiter, then Mars 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.