Merry Christmas or Happy Holidays or Merry Xmas or Seasons Greetings.
As I'm writing this I learned that there are some people who are going to boycott a company 'Winter Party' tomorrow because of the deliberate exclusion of the word Christmas. There are things that all people must remember.
To the secularist: Christmas is hardly religious as most everything about the celebration is secular in nature. It's also an official US holiday so lighten up a bit.
To the Mainstream Christian: What about a Winter Party offends you so much? Didn't the Apostle Paul commend us to not judge others by the 'moons' or 'sabbaths' that they keep? Does the Winter season/solstice apply here?
To the Evangelical: Get off your high-horse. Christmas is an Orthodox holiday anyway and leaves little for you to celebrate when it comes to keeping Jesus the 'reason for the season.' Sneak a little rum into your eggnog and shut up.
To the innocent bystander: Go about your way, there's nothing to see here.
I wish you all a productive winter and a successful calendar change!