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, 4 November 2026: day of Mercury
- Sunrise
- 06:55
- Sunset
- 16:59
- Next sunrise
- 06:57
A day hour lasts 50 min; a night hour, 1h 10m. Local time (Europe/Rome).
Right now☉︎ Hour of the Sun — hour 1 of the night, until 18:09
Day
- 1☿︎ Mercury06:55 – 07:46
- 2☽︎ Moon07:46 – 08:36
- 3♄︎ Saturn08:36 – 09:26
- 4♃︎ Jupiter09:26 – 10:17
- 5♂︎ Mars10:17 – 11:07
- 6☉︎ Sun11:07 – 11:57
- 7♀︎ Venus11:57 – 12:48
- 8☿︎ Mercury12:48 – 13:38
- 9☽︎ Moon13:38 – 14:28
- 10♄︎ Saturn14:28 – 15:19
- 11♃︎ Jupiter15:19 – 16:09
- 12♂︎ Mars16:09 – 16:59
Night
- 1☉︎ Sun16:59 – 18:09
- 2♀︎ Venus18:09 – 19:19
- 3☿︎ Mercury19:19 – 20:29
- 4☽︎ Moon20:29 – 21:39
- 5♄︎ Saturn21:39 – 22:48
- 6♃︎ Jupiter22:48 – 23:58
- 7♂︎ Mars23:58 – 01:08
- 8☉︎ Sun01:08 – 02:18
- 9♀︎ Venus02:18 – 03:27
- 10☿︎ Mercury03:27 – 04:37
- 11☽︎ Moon04:37 – 05:47
- 12♄︎ Saturn05:47 – 06:57
Questions
How are the planetary hours calculated in Bologna?
On Wednesday, 4 November 2026, the Sun rises at 06:55 and sets at 16:59: the day lasts 10h 04m, that is twelve day hours of 50 min. The night, until the next sunrise at 06:57, lasts 13h 57m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
Mercury, from 06:55 to 07:46: 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.