This is my last chance to wish readers Happy Holidays, or, as one of my favorite Christmas cards of all time (thanks Ruth!) put it:

To Whom It May Concern:
This is to inform you that you are wished a merry period of time up to and including December 25th and a happy period of time after, but not including, December 31st. The dates, December 26th to December 31st inclusive, can also, for purposes of this wish, be considered a time of merriment and/or happiness, at your discretion. Please be advised that wishes for peace, goodwill, comfort, and joy are also in effect as of this correspondence.
[Inside:] Thank you for your cooperation.