A movie theater chain allowed its customers to bring whatever they wanted to use as popcorn buckets, but they may not have expected wheelbarrows and coolers to come rolling through the doors. National Popcorn Day At Movie Theaters You don’t have to look very hard to find a “national day” just about every day of the year.

Sunday, January 19, is national popcorn day. A century ago, the ultimate movie snack was actually banned from theaters. A saleswoman in Kansas City Missouri helped create a new movie tradition.