Rule 15. Christmas Gift Protocol
Gifts are to be opened on Christmas morning, with two exceptions.
A. A family member has to work during the morning of Christmas Day. Ideally, the exchange process will then be pushed back to the afternoon.
B. Other conflicts preventing people from attending the exchange on Christmas morning. These will usually happen after families grow, causing scheduling festivities to become increasingly difficult. In this case, gift exchanges may be moved earlier or later than Christmas Day, but no more than two (2) weeks in either direction. Travel will inevitably throw wrinkles into holiday plans - note, however, that in these cases postponing the celebration is preferred to having it earlier. If travel teaches you anything, it should be patience.
Now, I know that there are many different cultural examples of gift exchanges - I think by law I have to be fascinated by the Potlatch...and I am a huge fan of the Fraggles' tradition of Passing It On (starts ~ 1:50):
As much as I'd love to keep talking about the various quirks of A Muppet Family Christmas...that would take until FOR. EV. ER. This will have to do for now.