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, 8 February 2028: day of Mars
- Sunrise
- 07:25
- Sunset
- 17:32
- Next sunrise
- 07:24
A day hour lasts 51 min; a night hour, 1h 09m. Local time (Europe/Rome).
Day
- 1♂︎ Mars07:25 – 08:15
- 2☉︎ Sun08:15 – 09:06
- 3♀︎ Venus09:06 – 09:57
- 4☿︎ Mercury09:57 – 10:47
- 5☽︎ Moon10:47 – 11:38
- 6♄︎ Saturn11:38 – 12:29
- 7♃︎ Jupiter12:29 – 13:19
- 8♂︎ Mars13:19 – 14:10
- 9☉︎ Sun14:10 – 15:00
- 10♀︎ Venus15:00 – 15:51
- 11☿︎ Mercury15:51 – 16:42
- 12☽︎ Moon16:42 – 17:32
Night
- 1♄︎ Saturn17:32 – 18:42
- 2♃︎ Jupiter18:42 – 19:51
- 3♂︎ Mars19:51 – 21:00
- 4☉︎ Sun21:00 – 22:09
- 5♀︎ Venus22:09 – 23:19
- 6☿︎ Mercury23:19 – 00:28
- 7☽︎ Moon00:28 – 01:37
- 8♄︎ Saturn01:37 – 02:46
- 9♃︎ Jupiter02:46 – 03:56
- 10♂︎ Mars03:56 – 05:05
- 11☉︎ Sun05:05 – 06:14
- 12♀︎ Venus06:14 – 07:24
Questions
How are the planetary hours calculated in Bologna?
On Tuesday, 8 February 2028, the Sun rises at 07:25 and sets at 17:32: the day lasts 10h 07m, that is twelve day hours of 51 min. The night, until the next sunrise at 07:24, lasts 13h 51m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Mars, from 07:25 to 08:15: 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.