April 19th is the traditional Patriot’s Day. In some states it is celebrated as such, in some it goes under a different name, and in far too many locales it goes by completely unobserved.
I always try to spend Patriot’s Day at the range, since I think the holiday is best marked by gunfire or firworks reminiscent of gunfire. I also tend to contemplate (more than I usually do) the roled .gov should or should not have, and the powers it should and should not have. I should probably incorporate reading some Heinlein or Rand into the holiday as well but usually im too busy cleaning guns at the end of the day.
Regardless, it is my hope that you’ll mark the holiday and even research it a little.