It seems like you blink and the holidays are soon fast upon you and you find yourself rushing to get everything done in time. This year you might have to start rushing sooner if you want to get gifts to family members who are serving overseas by Christmas.
This year the deadlines to send mail have been moved to the first or second week of December depending on where they are stationed.
According to the United States Postal Service web site, the types of mailing deliveries and by what date they need to be postmarked to be received by Dec. 25:
Express Mail: Dec. 17 except for zip 093 (APO/FPO/DPO/AE).
First Class and Priority: Dec. 10 or Dec. 3 for zip 093 (APO/FPO/DPO AE).
Parcel Airlift mail: Dec. 3 or Dec. 1 for zip 093 (APO/FPO/DPO AE).
On the U.S. Postal web site a short video is also available explaining how to properly label a package when sending it so that there is no confusion on where it is going and so it will arrive on time.