National Ukulele Day is celebrated on February 2, when ukulele players across the United States strum their favorite tunes to honor this four-stringed instrument. The ukulele originated in Portugal but was adapted by Hawaiians in the 19th century, becoming especially popular in Hawaii during the reign of King Kalākaua, who featured it in state performances. Its size can vary, with larger instruments producing deeper tones. The ukulele has been used in recordings by notable artists such as Bing Crosby and Elvis Presley. This day serves as a celebration of the instrument's cultural significance and musical versatility.