Sources inform me that “Presidents’ Day” is a popular misnomer for the Federal holiday created by statute in 1879. The statute designated the day as set forth hereinabove at the head hereof (as my already-on-the beach-in-an-undisclosed-location colleagues would say, between sips of their piña coladas).
So, whether as purist you call Monday, 2/16/26 Washington’s Birthday, or as a populist name it Presidents’ Day, Tax Court is closed.
I am silent.