First Day of Winter

The four seasons are determined by changing sunlight (not heat!) - which is determined by how our planet orbits the Sun and the tilt of its axis. The start of winter - the winter solstice - is the shortest day of the year, when the Sun reaches its most southern point in the sky at local noon. After this date, the days start getting longer.

Frost crystals, Mariager, Denmark

(Nikon D700, Carl Zeiss ZF.2 100mm 2,0 T* Makro-Planar, iso 200, handheld)

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