Hello,
Tomorrow the Sun will have reached the point of intersection in the
analemma 8-curve. How do you compute the exact time of intersection (i.e.
when both the hour angle and the solar declination match for two days)? And
does it have any special significance?
Dan
-
Hi Dan,
To me the value of the EQT at the intersection is an indication of the
asymmetry of the analemma caused by the difference between the solstice and
perihelion dates. The tilt of the earths axis is one parameter that defines the
analemma. This is shown at the extremes, the summer and winte
Roger (and others),
A slight correction concerning the motion of Earth's perihelion with respect to
the seasons. Owing to precession, the equinoxes and solstices drift slowly
westward along the ecliptic in a cycle of about 26,000 years. But at the same
time perturbations by the other planets
Hello all,
I subscribe to this Sundial List because I am working on an art project
installation of a Sundial and a "Full Moondial" (however weird this
sounds).
I am an artist working on time, space and coincidences. I am writing you
now because of this last question and answers entries.
I find them
