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 Friday, 8 October 2027: day of Venus
- Sunrise
- 07:20
- Sunset
- 18:43
- Next sunrise
- 07:21
A day hour lasts 57 min; a night hour, 1h 03m. Local time (Europe/Rome).
Day
- 1♀︎ Venus07:20 – 08:17
- 2☿︎ Mercury08:17 – 09:14
- 3☽︎ Moon09:14 – 10:11
- 4♄︎ Saturn10:11 – 11:08
- 5♃︎ Jupiter11:08 – 12:04
- 6♂︎ Mars12:04 – 13:01
- 7☉︎ Sun13:01 – 13:58
- 8♀︎ Venus13:58 – 14:55
- 9☿︎ Mercury14:55 – 15:52
- 10☽︎ Moon15:52 – 16:49
- 11♄︎ Saturn16:49 – 17:46
- 12♃︎ Jupiter17:46 – 18:43
Night
- 1♂︎ Mars18:43 – 19:46
- 2☉︎ Sun19:46 – 20:49
- 3♀︎ Venus20:49 – 21:52
- 4☿︎ Mercury21:52 – 22:56
- 5☽︎ Moon22:56 – 23:59
- 6♄︎ Saturn23:59 – 01:02
- 7♃︎ Jupiter01:02 – 02:05
- 8♂︎ Mars02:05 – 03:08
- 9☉︎ Sun03:08 – 04:12
- 10♀︎ Venus04:12 – 05:15
- 11☿︎ Mercury05:15 – 06:18
- 12☽︎ Moon06:18 – 07:21
Questions
How are the planetary hours calculated in Bologna?
On Friday, 8 October 2027, the Sun rises at 07:20 and sets at 18:43: the day lasts 11h 23m, that is twelve day hours of 57 min. The night, until the next sunrise at 07:21, lasts 12h 38m: twelve night hours of 1h 03m.
Which planet rules the first hour that day?
Venus, from 07:20 to 08:17: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus 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.