1-Because of the different time zones Santa actually has 31 hours to deliver gifts. The reindeer have to fly very fast to get to 823 homes per second.
2- USPS delivers 20 billion cards and packages between Thanksgiving and Christmas Eve.
3- Rudolph first came on the scene in 1939 when Montgomery Ward Dept stores distributed 2.4 million copies of the booklet "Rudolph the Red-Nosed Reindeer' by the stores copywriter Robert May.
4- Executives from Montgomery Ward vetoed the original name Rollo so Robert went to his daughter - she suggested Rudolph!
5- Merry Christmas in Italian is Buon Natale!
thank you to Real Simple for this info.