White Christmas (weather) by Bing Crosby from the film "Holiday Inn", is the best-selling single of all time and speaks nostalgically of a traditional white Christmas. The definition of "white Christmas" varies. In most countries, it simply means that the ground is covered by snow at Christmas, but some countries have more strict definitions. In the United States, the official definition of a white Christmas is that there has to be a snow depth of at least at 7:00 a.m. local time on Christmas morning, and in Canada the official definition is that there has to be more than on the ground on
White Christmas (weather) White Christmas (weather) A white Christmas is a Christmas with the presence of snow: either on Christmas Eve or on Christmas Day, depending on local tradition. This phenomenon is most common in the northern countries of the Northern Hemisphere. Because December is at the beginning of the Southern Hemisphere summer, white Christmases there are extremely rare, except in Antarctica, in the Southern Alps of New Zealand's South Island, and in parts of the Andes in South America as well as the southern tip of the continent such as in places like Ushuaia, Argentina. The Irving Berlin song, "White Christmas", sung