Here's what we know:
* Origins: The song is based on a traditional Neapolitan melody dating back to the 18th or 19th century.
* First Recordings: The earliest known recordings of the song date back to the early 20th century, with various singers and instrumentalists contributing to different versions.
* Popularity: It gained widespread popularity throughout the 20th century, with numerous artists reinterpreting it.
Therefore, there isn't a single, definitive date for its creation. It's more accurate to say it originated from a traditional Neapolitan folk song, which was later adapted and recorded throughout the 20th century.