May 21 is recognized as "End of the World" day, a concept that gained attention due to predictions made by radio presenter Harold Camping, who claimed the world would end on this date in 2011 based on biblical calculations. Although the day passed without incident, it has become an occasion for celebration rather than fear. People globally observe this day with various customs, such as hosting "End of the World" parties, creating bucket lists, and making themed playlists featuring songs like "It’s the End of the World As We Know It" by REM. The day serves as a reminder to appreciate life and not take it too seriously, while also cautioning against false predictions of doom. Despite the origins of the day in apocalyptic predictions, it has evolved into a lighthearted event for many.