Today is World Hello Day! Today is celebrated by simply saying "hello" to as many people as you can. You don't have to say anything more than that, although it is considered polite to unless you are simply passing them in a hallway and want to acknowledge their existence without given them the option of filling you in on their life story. Simply greet other people today in a nice, friendly way.
Today is also False Confessions Day! You can celebrate this half of today by confessing things that are not true. I wouldn't confess to a crime if I were you, but almost anything else is fair game as long as the people you choose to confess to know you well. Otherwise, they may just take it too seriously, and all of the sudden you'll be 'that guy'. The one who claims he's a real daredevil and would totally do anything for the same adrenaline rush that you got when you totally went sledding on a black diamond slope in the Alps. Totally. You so did that.
Thanks for reading!