Riddle day

My fifth grade teacher, Mrs. Guthrie, was one of my favorites of all time. Besides telling hilarious stories that had the entire class rolling in the aisles, she also taught me things that will forever be etched in my brain. One of the more obscure things she said that has always stuck with me, and which I think about every year on this day, is a riddle: What is the only day of the year that is a command?

Today! March 4th = March forth!