function getDay(s) { return ["Sun","Mon","Tue","Wed","Thu","Fri","Sat"][new Date(Date.UTC.apply(this,s.match(/(\d{4})?[^\d]*(\d{1,2})[^\d]*(\d{1,2})/).slice(1).map(function(e,i){switch(i){case 0:return e?e:(new Date()).getFullYear();case 1…