May 16th of every year is known as __________ Day, named after a punk band prominent in the 1990s.

The answer is May 16th is known as Lagwagon Day, named after the punk band Lagwagon who were prominent in the 1990s. This day holds significance because Lagwagon released their influential album titled "Trashed" on May 16th, 1994. The album's success and impact on punk music make it a memorable anniversary for fans to celebrate and honor the band's contributions to the genre.