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 Wednesday, 2 June 2027: day of Mercury
- Sunrise
- 05:32
- Sunset
- 20:52
- Next sunrise
- 05:32
A day hour lasts 1h 17m; a night hour, 43 min. Local time (Europe/Rome).
Day
- 1☿︎ Mercury05:32 – 06:49
- 2☽︎ Moon06:49 – 08:06
- 3♄︎ Saturn08:06 – 09:22
- 4♃︎ Jupiter09:22 – 10:39
- 5♂︎ Mars10:39 – 11:56
- 6☉︎ Sun11:56 – 13:12
- 7♀︎ Venus13:12 – 14:29
- 8☿︎ Mercury14:29 – 15:46
- 9☽︎ Moon15:46 – 17:02
- 10♄︎ Saturn17:02 – 18:19
- 11♃︎ Jupiter18:19 – 19:36
- 12♂︎ Mars19:36 – 20:52
Night
- 1☉︎ Sun20:52 – 21:36
- 2♀︎ Venus21:36 – 22:19
- 3☿︎ Mercury22:19 – 23:02
- 4☽︎ Moon23:02 – 23:46
- 5♄︎ Saturn23:46 – 00:29
- 6♃︎ Jupiter00:29 – 01:12
- 7♂︎ Mars01:12 – 01:55
- 8☉︎ Sun01:55 – 02:39
- 9♀︎ Venus02:39 – 03:22
- 10☿︎ Mercury03:22 – 04:05
- 11☽︎ Moon04:05 – 04:49
- 12♄︎ Saturn04:49 – 05:32
Questions
How are the planetary hours calculated in Bologna?
On Wednesday, 2 June 2027, the Sun rises at 05:32 and sets at 20:52: the day lasts 15h 20m, that is twelve day hours of 1h 17m. The night, until the next sunrise at 05:32, lasts 8h 39m: twelve night hours of 43 min.
Which planet rules the first hour that day?
Mercury, from 05:32 to 06:49: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury 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.