Dig through your closet and pull out your Scandinavian sweater. After all, tomorrow (Thursday) is Leif Erikson day. “The first group of Norwegian immigrants (after Leif Erikson) led by Cleng Peerson, landed in New York City on October 9, 1825 on the sloop ‘Restauration.’ In honor of the day, wear your Scandinavian sweater,” says Jules in the MyBallard forum. And good timing: tomorrow will be one of the cooler fall days so far, with a high of 51 degrees.