Moving Pillar - Imaged from Nelson, New Zealand by Dennis McClelland. ©Dennis McClelland
Pillars are the glints of sunlight reflected from millions of plate shaped ice crystals in high and cold clouds. They are always directly above (or below) the sun.

After sunset watch them slide along the horizon as they follow the movement of the sun below the horizon. Compare pillar positions relative to the mountain, The two shots were 12 minutes apart. In New Zealand sunset pillars creep southwards, in the Northern hemisphere they move to the north.

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