Поиск ближайшего времени из списка

s = "10:00, 10:20, 09:40"; 
sa = s.split(','); 
 
var today = new Date(); 
var dd = today.getDate(); 
var mm = today.getMonth()+1; //January is 0! 
var yyyy = today.getFullYear(); 
 
if(dd<10) { 
    dd='0'+dd 
}  
 
if(mm<10) { 
    mm='0'+mm 
}  
 
today = mm+'/'+dd+'/'+yyyy; 
 
var now = new Date(); 
var tnow = now.getTime(); 
 
var tmin = -1; 
var tdiff = 0; 
 
jQuery.each(sa, function(key, value) { 
  t = Date.parse(today + ' ' + value); 
  tdiff = Math.abs(t - tnow); 
  if (tmin < 0) tmin = tdiff; 
  if (tdiff < tmin) tmin = tdiff; 
}) 
console.log(tmin / 1000/ 3600);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>