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, 19 October 2027: day of Mars
- Sunrise
- 07:34
- Sunset
- 18:24
- Next sunrise
- 07:35
A day hour lasts 54 min; a night hour, 1h 06m. Local time (Europe/Rome).
Day
- 1♂︎ Mars07:34 – 08:28
- 2☉︎ Sun08:28 – 09:22
- 3♀︎ Venus09:22 – 10:16
- 4☿︎ Mercury10:16 – 11:10
- 5☽︎ Moon11:10 – 12:05
- 6♄︎ Saturn12:05 – 12:59
- 7♃︎ Jupiter12:59 – 13:53
- 8♂︎ Mars13:53 – 14:47
- 9☉︎ Sun14:47 – 15:41
- 10♀︎ Venus15:41 – 16:35
- 11☿︎ Mercury16:35 – 17:30
- 12☽︎ Moon17:30 – 18:24
Night
- 1♄︎ Saturn18:24 – 19:30
- 2♃︎ Jupiter19:30 – 20:36
- 3♂︎ Mars20:36 – 21:42
- 4☉︎ Sun21:42 – 22:48
- 5♀︎ Venus22:48 – 23:54
- 6☿︎ Mercury23:54 – 00:59
- 7☽︎ Moon00:59 – 02:05
- 8♄︎ Saturn02:05 – 03:11
- 9♃︎ Jupiter03:11 – 04:17
- 10♂︎ Mars04:17 – 05:23
- 11☉︎ Sun05:23 – 06:29
- 12♀︎ Venus06:29 – 07:35
Questions
How are the planetary hours calculated in Bologna?
On Tuesday, 19 October 2027, the Sun rises at 07:34 and sets at 18:24: the day lasts 10h 50m, that is twelve day hours of 54 min. The night, until the next sunrise at 07:35, lasts 13h 11m: twelve night hours of 1h 06m.
Which planet rules the first hour that day?
Mars, from 07:34 to 08:28: 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.