October 26th, 2015: The "theoretical" part is to allow PhDs in alternate universes, in which perhaps just one thing was changed leading to a vastly different tomorrow?? So keep an eye out today for what that one thing might be. – Ryan
December 5th: Last day that ALL US shipping methods are safe.
December 12th: Last day that to use USPS Priority or Express for international orders!
December 13th: Only USPS Priority Express or FedEx 2- for guaranteed Christmas delivery.
December 18th-December 19th: FedEx 2-Day and Overnight might work, but no promises!!
Here that is in GRAPHIC FORM!