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 Sunday, 6 February 2028: day of the Sun
- Sunrise
- 07:27
- Sunset
- 17:29
- Next sunrise
- 07:26
A day hour lasts 50 min; a night hour, 1h 10m. Local time (Europe/Rome).
Day
- 1☉︎ Sun07:27 – 08:18
- 2♀︎ Venus08:18 – 09:08
- 3☿︎ Mercury09:08 – 09:58
- 4☽︎ Moon09:58 – 10:48
- 5♄︎ Saturn10:48 – 11:38
- 6♃︎ Jupiter11:38 – 12:28
- 7♂︎ Mars12:28 – 13:19
- 8☉︎ Sun13:19 – 14:09
- 9♀︎ Venus14:09 – 14:59
- 10☿︎ Mercury14:59 – 15:49
- 11☽︎ Moon15:49 – 16:39
- 12♄︎ Saturn16:39 – 17:29
Night
- 1♃︎ Jupiter17:29 – 18:39
- 2♂︎ Mars18:39 – 19:49
- 3☉︎ Sun19:49 – 20:59
- 4♀︎ Venus20:59 – 22:08
- 5☿︎ Mercury22:08 – 23:18
- 6☽︎ Moon23:18 – 00:28
- 7♄︎ Saturn00:28 – 01:38
- 8♃︎ Jupiter01:38 – 02:47
- 9♂︎ Mars02:47 – 03:57
- 10☉︎ Sun03:57 – 05:07
- 11♀︎ Venus05:07 – 06:16
- 12☿︎ Mercury06:16 – 07:26
Questions
How are the planetary hours calculated in Bologna?
On Sunday, 6 February 2028, the Sun rises at 07:27 and sets at 17:29: the day lasts 10h 02m, that is twelve day hours of 50 min. The night, until the next sunrise at 07:26, lasts 13h 57m: twelve night hours of 1h 10m.
Which planet rules the first hour that day?
The Sun, from 07:27 to 08:18: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Venus, Mercury, the Moon, Saturn, Jupiter, Mars, then the Sun 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.