Just got the postcard mailed from Palmer Station in Antarctica... December 5. And that one went through Denver! I was, I think, the only one on the expedition to send postcards from Palmer. Nice to know that they're finally here. So far, of the non-US postcards, only two have arrived. Only the one mailed from Ushuaia Argentina on Dec. 6 took less than a months: Received Dec. 27. When they said cards might not get there until Easter, they weren't kidding.
Fortunately, I waited until getting back to Miami to mail the majority of post cards.