What do Christians celebrate on the second days of Christmas, Easter and Pentecost?

Reading the Wiki article, it’s interesting how the majority of biblical scholars regard the story as a myth yet

Against this majority opinion some argue for the historicity of the event. R. T. France, while acknowledging that the massacre is “perhaps the aspect [of Matthew’s infancy narrative] most often rejected as legendary” [9] and that the story is similar to that of Moses, believes that it would not have arisen without historical basis.[10] Everett Ferguson argues that the story makes sense in the context of Herod’s reign of terror in the last few years of his rule…

then further on the estimates of the dead children range from a couple dozen to 144,000.

Sure sounds like an ass-pull to me.