The 1920's Day!
The 1920's lasted for ten years, early in the 20th century. They took place not long after World War I, but long enough before World War II for no one to be very worried about it. At the end of the 1920's, the Great Depression began, creating a period of time that was known throughout the world as "The Time America Sucked."
The 1920's are never going to happen again, so today is the day to be glad that you don't have to wait in line for free soup, and it's the day to be sad that World War II already happened instead of it not having happened yet.
Happy The 1920's Day!