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, 30 March 2027: day of Mars
- Sunrise
- 07:00
- Sunset
- 19:39
- Next sunrise
- 06:58
A day hour lasts 1h 03m; a night hour, 57 min. Local time (Europe/Rome).
Day
- 1♂︎ Mars07:00 – 08:03
- 2☉︎ Sun08:03 – 09:06
- 3♀︎ Venus09:06 – 10:09
- 4☿︎ Mercury10:09 – 11:13
- 5☽︎ Moon11:13 – 12:16
- 6♄︎ Saturn12:16 – 13:19
- 7♃︎ Jupiter13:19 – 14:22
- 8♂︎ Mars14:22 – 15:26
- 9☉︎ Sun15:26 – 16:29
- 10♀︎ Venus16:29 – 17:32
- 11☿︎ Mercury17:32 – 18:35
- 12☽︎ Moon18:35 – 19:39
Night
- 1♄︎ Saturn19:39 – 20:35
- 2♃︎ Jupiter20:35 – 21:32
- 3♂︎ Mars21:32 – 22:28
- 4☉︎ Sun22:28 – 23:25
- 5♀︎ Venus23:25 – 00:22
- 6☿︎ Mercury00:22 – 01:18
- 7☽︎ Moon01:18 – 02:15
- 8♄︎ Saturn02:15 – 03:11
- 9♃︎ Jupiter03:11 – 04:08
- 10♂︎ Mars04:08 – 05:05
- 11☉︎ Sun05:05 – 06:01
- 12♀︎ Venus06:01 – 06:58
Questions
How are the planetary hours calculated in Bologna?
On Tuesday, 30 March 2027, the Sun rises at 07:00 and sets at 19:39: the day lasts 12h 39m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 06:58, lasts 11h 19m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Mars, from 07:00 to 08:03: 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.