Christmas cards, gift packages for loved ones living far away; there's a lot of mailing to be done before the holidays.
But if you follow these handy deadlines provided by the U.S. Postal Service, your mail should arrive at its destination in time for the holidays (within the continental U.S.).
First Class Mail: Dec. 20
Priority Mail: Dec. 21
Express Mail: Dec. 22
Parcels: Dec. 14