National Unfriend Day is observed worldwide every November 17. This day encourages individuals to review their social media connections and unfriend those they no longer interact with or whose posts they do not engage with. The concept of "unfriending" gained prominence in the early 2000s, with the term first appearing in 2003 and later being named the word of the year in 2009 by Oxford University Press. The inaugural National Unfriend Day was introduced by American television host Jimmy Kimmel on his show "Jimmy Kimmel Live!" in 2010, promoting the idea of decluttering one's friend list. Participants are advised to categorize their connections and consider unfriending those who do not contribute to meaningful relationships. Additionally, the day serves as an opportunity to reconnect with individuals who may have been neglected over time.