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 (song) hit song: "Be Careful, It's My Heart". By the end of October 1942, "White Christmas" topped the "Your Hit Parade" chart. It remained in that position until well into the new year. It has often been noted that the mix of melancholy—"just like the ones I used to know"—with comforting images of home—"where the treetops glisten"—resonated especially strongly with listeners during World War II. A few weeks after the attacks on Pearl Harbor, Crosby introduced "White Christmas" on a Christmas Day broadcast. The Armed Forces Network was flooded with requests for the song. The recording is noted for Crosby's whistling