Happy (calendar) New Year
Yesterday (31 December) someone wished me a "gut yontif".I was grateful, but it didn't sound right to me somehow, given that 1 January isn't strictly speaking a yontif (yom tov). How do we correctly wish a person a happy (calendar) new year? I'm guessing simply "gut nei yor" or similar. Or should we be generous and extend the meaning of "yontif" to dates that are important for the goyim, too?