5.25" Floppy Day
5.25" Floppy Day is held on May 5. #525FloppyDay. This event in the first decade of the month May is annual.
The 5.25-inch floppy disk was the successor to the 8-inch floppy disk and served as the dominant portable storage medium during the late 1970s and throughout the 1980s. It was developed in 1976 and was similar in capacity to the 8-inch floppy disk but used high-density media and recording techniques.