Swap two divs if between two times on two days

div swap - time

$(document).ready(function(){
    $("#maint").hide();
    var d=new Date();
    hour = d.getHours();
    today = d.getDay();
    if((today===5 && hour >= 20)||(today===6 && hour < 6)){
      $("#apply").hide();
      $("#maint").show();
    }
 });