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, 24 January 2027: day of the Sun
- Sunrise
- 07:41
- Sunset
- 17:12
- Next sunrise
- 07:40
A day hour lasts 48 min; a night hour, 1h 12m. Local time (Europe/Rome).
Day
- 1☉︎ Sun07:41 – 08:29
- 2♀︎ Venus08:29 – 09:16
- 3☿︎ Mercury09:16 – 10:04
- 4☽︎ Moon10:04 – 10:51
- 5♄︎ Saturn10:51 – 11:39
- 6♃︎ Jupiter11:39 – 12:26
- 7♂︎ Mars12:26 – 13:14
- 8☉︎ Sun13:14 – 14:01
- 9♀︎ Venus14:01 – 14:49
- 10☿︎ Mercury14:49 – 15:37
- 11☽︎ Moon15:37 – 16:24
- 12♄︎ Saturn16:24 – 17:12
Night
- 1♃︎ Jupiter17:12 – 18:24
- 2♂︎ Mars18:24 – 19:36
- 3☉︎ Sun19:36 – 20:49
- 4♀︎ Venus20:49 – 22:01
- 5☿︎ Mercury22:01 – 23:14
- 6☽︎ Moon23:14 – 00:26
- 7♄︎ Saturn00:26 – 01:38
- 8♃︎ Jupiter01:38 – 02:51
- 9♂︎ Mars02:51 – 04:03
- 10☉︎ Sun04:03 – 05:15
- 11♀︎ Venus05:15 – 06:28
- 12☿︎ Mercury06:28 – 07:40
Questions
How are the planetary hours calculated in Bologna?
On Sunday, 24 January 2027, the Sun rises at 07:41 and sets at 17:12: the day lasts 9h 31m, that is twelve day hours of 48 min. The night, until the next sunrise at 07:40, lasts 14h 29m: twelve night hours of 1h 12m.
Which planet rules the first hour that day?
The Sun, from 07:41 to 08:29: 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.