Presidents Day is a terrible idea for a holiday. Just an awful idea. In this republic, there's absolutely no good reason to take a day to honor our presidents.
On the other hand, Washington's Birthday is a perfectly good idea. If we're going to honor great Americans, I'm not going to argue with those who put George Washington first on the list of those to be honored. In fact, according to wikipedia, the official federal holiday is Washington's Birthday, but "about a dozen" states have renamed it to Presidents Day or something else. According to my kid's school lunch calendar, she has today off for the fairly imperial-sounding "President's Day," but I have no idea whether that's an official state designation or just what someone in charge of typing up the school lunch calendars came up with.
The consensus Three Greatest Presidents are Washington, Lincoln, and (Franklin) Roosevelt, and I wouldn't argue with any celebration of those three -- the other two Greatest Men Who Were Presidents are Jefferson and Madison, and I'm also on board with honoring them (I'm not a huge Jefferson fan, but I don't really object to his status as a great American. Want argue Adams? Ike? Take it to comments). On the other hand, I'm also pretty comfortable with Washington and King being the only two Americans honored with national holidays.
So, Happy Washington's Birthday, even if it isn't actually Washington's birthday, and even if most of what your seeing this weekend are references to Presidents Day, President's Day, or Presidents' Day -- any way you spell it, a really bad idea. Which reminds me -- if you happen to think of James Buchanan, Franklin Pierce, or Richard Nixon today, I think what you're supposed to do is spit twice over your left shoulder to avoid bad luck.