Every four years, Leap Year adds one day to the calendar to keep our timekeeping in alignment with the Earth’s revolutions around the sun.  I thought it’d be neat to find an event in naval history to highlight and mark the unusual day. Unfortunately, there aren’t any of those major anniversaries that one would normally note — say, one of the World War II island assaults. A web search yielded nothing. Nada. The Navy agrees. According to navy.mil, “There is no Navy historical data noted at this time for Leap Day (Feb. 29).” The Navy’s reference is to the big…