April 2nd is National Peanut Butter and Jelly Day, not to be confused with National Peanut Butter Day, which is January 24th. The origin of this holiday is unclear, but the earliest internet mention of the event is on the Smucker’s website from 2002. Based on the company’s copious production of both peanut butter and jelly, it is possible that the Smucker’s company itself invented the holiday.