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, 17 November 2026: day of Mars
- Sunrise
- 07:13
- Sunset
- 16:45
- Next sunrise
- 07:14
A day hour lasts 48 min; a night hour, 1h 12m. Local time (Europe/Rome).
Day
- 1♂︎ Mars07:13 – 08:01
- 2☉︎ Sun08:01 – 08:48
- 3♀︎ Venus08:48 – 09:36
- 4☿︎ Mercury09:36 – 10:24
- 5☽︎ Moon10:24 – 11:11
- 6♄︎ Saturn11:11 – 11:59
- 7♃︎ Jupiter11:59 – 12:47
- 8♂︎ Mars12:47 – 13:34
- 9☉︎ Sun13:34 – 14:22
- 10♀︎ Venus14:22 – 15:10
- 11☿︎ Mercury15:10 – 15:57
- 12☽︎ Moon15:57 – 16:45
Night
- 1♄︎ Saturn16:45 – 17:57
- 2♃︎ Jupiter17:57 – 19:10
- 3♂︎ Mars19:10 – 20:22
- 4☉︎ Sun20:22 – 21:35
- 5♀︎ Venus21:35 – 22:47
- 6☿︎ Mercury22:47 – 00:00
- 7☽︎ Moon00:00 – 01:12
- 8♄︎ Saturn01:12 – 02:24
- 9♃︎ Jupiter02:24 – 03:37
- 10♂︎ Mars03:37 – 04:49
- 11☉︎ Sun04:49 – 06:02
- 12♀︎ Venus06:02 – 07:14
Questions
How are the planetary hours calculated in Bologna?
On Tuesday, 17 November 2026, the Sun rises at 07:13 and sets at 16:45: the day lasts 9h 32m, that is twelve day hours of 48 min. The night, until the next sunrise at 07:14, lasts 14h 29m: twelve night hours of 1h 12m.
Which planet rules the first hour that day?
Mars, from 07:13 to 08:01: 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.