Time is running out for packages to be mailed and still arrive in time for Christmas. The US Postal Service says those with loved ones stationed overseas, today is the deadline for military mail. Those trying to save money by sending things across the country by parcel post – the most economical shipping service – need to have those packages in the mail by Monday December 16th. Even first class or priority mail will only be effective to get those cards and packages there on time until December 20th and express mail will still deliver on time if posted by December 23rd. The US Post Office also admonishes people to be sure the packages are addressed with the correct address and zip code, a return address, and include the address inside the package as well should the address on the package become unreadable.