Today marks one week until Christmas, and for some in the North Georgia area, Monday was their deadline to get out cards, letters and packages to make sure they’re delivered by Christmas Day. Monday was deemed the busiest day of the year for the U.S. Post Office. An estimated 3.8 million cards, packages and letters were going to be brought in and delivered on Monday in the North Georgia and Atlanta areas, according to Michael Miles, communications manager of the Atlanta district for the U.S. Postal Service.