Number of days in month in normal year
let daysOfMonth = [ 31 , 28 , 31 , 30 , 31 , 30 , 31 , 31 , 30 , 31 , 30 , 31 ] ; let currYear , daysTillNow , extraTime , extraDays , index , date , month , hours , minutes , secondss , flag = 0 ;