I decree June 30 shall be a new holiday: Invariance Day.

A day to celebrate things that don’t vary.

On June 30, 1905, Einstein published his third paper, “On the Electrodynamics of Moving Bodies.” This paper set forth the Theory of Relativity and established special relativity.  Einstein’s original title for the paper was “The Theory of Invariances.”

In physics, invariance somehow doesn’t mean that it doesn’t vary. But in Gallup, New Mexico, and out to the Four Sacred Mountains and beyond, Invariance Day celebrates the constants.

Suggested activity for the holiday: try to understand the theory of relativity and special relativity. Make it an annual thing.