var counter=0;
var today = new Date();
for(var y=2008;y<2014;y++){
	for(var m=0;m<12;m++){
		var d13= new Date(y,m,13);
		if(d13 < today) continue;
		if(d13.getDay()==5){
			print(d13);
			counter++;
		}
	}
}
print(counter)