World Amateur Radio Day

The International Amateur Radio Union (IARU) is an international confederation of national organisations that allows a forum for common matters of concern to amateur radio operators worldwide, and collectively represents matters to the International Telecommunication Union (ITU). The International Amateur Radio Union was founded in 1925 and, as of July 2021, it is composed of 174 national member societies.

April 18 is the 108th day of the year in the Gregorian calendar; 257 days remain until the end of the year.