Joe Biden had a series on embarrassing gaffes on Wednesday.br Biden was chatting with Pennsylvania Gov. Tom Wolf.br The two discussed Delaware history.br Wolf said Delaware once fell under Pennsylvania's authority.br Biden then made a gaffe, confusing D-Day with the day Delaware declared independence.br "But we declared our independence on Dec. 7 by the way, it's not just D-Day."br In one simple statement, Biden confused Delaware independence (June 15th 1776), D-Day (June 6, 1944) and Pearl Harbor (Dec. 7, 1941).br A Biden spokesman said the candidate was referring to Delaware Day, an event celebrated on Dec. 7 since 1933.