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, 9 May 2028: day of Mars
- Sunrise
- 05:53
- Sunset
- 20:29
- Next sunrise
- 05:52
A day hour lasts 1h 13m; a night hour, 47 min. Local time (Europe/Rome).
Day
- 1♂︎ Mars05:53 – 07:06
- 2☉︎ Sun07:06 – 08:19
- 3♀︎ Venus08:19 – 09:32
- 4☿︎ Mercury09:32 – 10:45
- 5☽︎ Moon10:45 – 11:58
- 6♄︎ Saturn11:58 – 13:11
- 7♃︎ Jupiter13:11 – 14:24
- 8♂︎ Mars14:24 – 15:37
- 9☉︎ Sun15:37 – 16:50
- 10♀︎ Venus16:50 – 18:03
- 11☿︎ Mercury18:03 – 19:16
- 12☽︎ Moon19:16 – 20:29
Night
- 1♄︎ Saturn20:29 – 21:16
- 2♃︎ Jupiter21:16 – 22:02
- 3♂︎ Mars22:02 – 22:49
- 4☉︎ Sun22:49 – 23:36
- 5♀︎ Venus23:36 – 00:23
- 6☿︎ Mercury00:23 – 01:10
- 7☽︎ Moon01:10 – 01:57
- 8♄︎ Saturn01:57 – 02:44
- 9♃︎ Jupiter02:44 – 03:31
- 10♂︎ Mars03:31 – 04:18
- 11☉︎ Sun04:18 – 05:05
- 12♀︎ Venus05:05 – 05:52
Questions
How are the planetary hours calculated in Bologna?
On Tuesday, 9 May 2028, the Sun rises at 05:53 and sets at 20:29: the day lasts 14h 35m, that is twelve day hours of 1h 13m. The night, until the next sunrise at 05:52, lasts 9h 24m: twelve night hours of 47 min.
Which planet rules the first hour that day?
Mars, from 05:53 to 07:06: 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.