The USPS has released the deadlines for all mail outgoing before the Christmas holiday. (It is never too early to think about this.)
Rather than copy the whole post, I will give the domestic deadlines, and you can look here for all the rest.
First Class- December 20
Priority Mail- December 21
Express Mail- December 22
Parcel Post- December 15
DNDC Drop Ship- December 19
DDU Drop Ship- December 22
DNDC stands for Destination Network Distribution Center. I couldn't quickly locate what DDU stands for..any help would be appreciated.
If anyone is curious..all the holiday packages I have to mail are being mailed out before the end of November. Mainly because December gets a bit crazy here...and I don't want my packages to get lost among the mess of holiday goodness. =)