National Landon Day is celebrated on March 26 to honor all boys named Landon. The name Landon has its origins in Old English, derived from the words 'lang' meaning 'long' and 'dn' meaning 'hill,' indicating a settlement near a long hill. Initially documented as 'Langadune' in the early 11th century, Landon is one of the oldest surnames still in use today. Over time, it has become a popular first name, recognized for its coolness and the caring nature often associated with those who bear it. The day serves as an appreciation for individuals named Landon, and while specific customs are not detailed, it is likely that celebrations involve recognition and acknowledgment of those with the name.