We wish people a 'Happy Birthday', and if you're in the USA in November and December you might say 'Happy Holidays', so why do we say 'Merry Christmas' more often than 'Happy Christmas'?!
Daxue, literally translated as Great Snow, is one of the traditional Chinese solar terms. The Great Snow actually means it is getting colder and there is frequent snowfall compared with that of Xiaoxue (Slight Snow, another solar term)...
Thanksgiving Day is a harvest festival. Traditionally, it is a time to give thanks for the harvest and express gratitude in general. It is a holiday celebrated primarily in Canada and the United States. While perhaps religiousorigin in, Thanksgiving is now primarily identified as a secular holiday.