Afternoon Analemma

An analemma is that figure-8 curve you procure for fogeys that mark the area of the Sun at the identical time day by day for twelve months. To originate this one, a 4×5 pinhole digicam used to be bid up taking a look north in southern Novel Zealand skies. The shutter used to be temporarily opened each and every determined day in the afternoon at 4pm local time exposing the identical photosensitized glass plate for the year spanning September 23, 2022 to September 19, 2023. On two days, the chilly climate and summer solstices, the shutter used to be opened again 15 minutes after the principle exposure and remained start till sunset to label the sun trails at the bottom and top of the curve. The equinox dates correspond to positions in the center of the curve, no longer the crossover level. Pointless to order, the curve itself is inverted in contrast to an analemma traced from the northern hemisphere. And whereas fall begins this day at the Autumnal Equinox for the northern hemisphere, or no longer it is the Spring Equinox in the south.