SUNDIAL CA’ DI FIORE
1) WHEN THE EQUINOX LINE IS PERFECTLY HORIZONTAL, IT MEANS THAT THE RELEVANT WALL IS EXACTLY EXPOSED TO THE SOUTH.
2) IF THE EQUINOX LINE IS LOWER ON THE RIGHT, IT MEANS THAT THE WALL FACES EAST.
3) WHEN IT IS LOWER ON THE LEFT IT MEANS THAT THE WALL FACES WEST.
4) THE SHADOW OF THE HOLE OF THE GNOMON SLIDES OVER THE EQUINOX LINE TWICE A YEAR AND PRECISELY DURING THE SPRING EQUINOX (MARCH 22) AND IN THE AUTUMN EQUINOX (SEPTEMBER 23).
5) TWO RED POINTS ARE HIGHLIGHTED ON THE UNDERSTYLE LINE, ONE UNDER THE EQUINOX AND THE OTHER ABOVE, WHICH IDENTIFY THE WINTER SOLSTICE ON DECEMBER 22 (ABOVE) WHILE UNDER JUNE 21 (JUNE 21). SO THE SHADOW OF THE HOLE OF THE GNOMON PASSES ON THE UPPER POINT ON DECEMBER 22 AND JUNE 21 ON THE LOWER POINT.
6) THE SUN IN ITS PERPETUAL MOTION REACHES THE MAXIMUM HEIGHT (23.5 ° COMPARED TO THE EQUATOR) IN THE SUMMER AND THE MINIMUM (- 23.5 °) IN THE WINTER PERIOD.
MERIDIANA PAINTED ON THE FACADE OF “Cà di fiore” IN ORIAGO DI MIRA
DESIGNED AND CONCEIVED BY FRIEND PASQUALETTO LUCIANO A.D. 2021