These are all real. I feel the need to say that.
  1. Chicken soup for the soul day
    Really? That's a private company who writes books.
  2. Happy Hour Day
    1. Happy hour is always more than one hour. 2. Why is there a day for an hour?
  3. Guinness World Record Day
    Doesn't need a day. Has a book.
  4. Pizza With The Works Without Anchovies Day
    There doesn't seem to be much of a legitimate backstory. Surprise.
  5. Pneumonia Day
    'Tis the season
  6. Usability Day
    Celebrating the fact that things can be used.
  7. Bonus: yesterday was Air Day
    Air. Day.