Winter is one of the four seasons of temperate zones. Calculated astronomically, it begins on the solstice and ends on the equinox. It is the season with the shortest days and the lowest average temperatures. It has colder weather and it is lasting long long to long time. The coldest average temperatures of the season are typically experienced in January. Blue white winter would be the most beautiful season if not so cold. Unfortunately we do not have snow so often. Photo is taken in year 2007 in USA. This kind sunsets and blue snow view are so rare and beautiful.