A film tracking the daily position of the sun at 12:00 in Cluj-Napoca, Romania, through the course of years:
In astronomy, an analemma (from Greek ἀνάλημμα "pedestal of a sundial") is a curve representing the angular offset of a celestial body (usually the Sun) from its mean position on the celestial sphere as viewed from another celestial body relative to the viewing body's celestial equator. The term is commonly applied nowadays to the figure traced in the sky when the position of the Sun is plotted at the same time each day over a calendar year from a particular location on Earth.