datepicker Calendar all days not clickable

datepicker Calendar all days not clickable

Hi,
I have an event calendar. It´s shows me the days that are booked/free . It works great too.
I would like to go over it with the mouse without being able to click the days. I do not want to be able to click the days.. Is that possible?

Hier my code.

<script type="text/javascript">
     var highlight_dates = ['1-3-2018','1-4-2018','18-4-2018','28-4-2018'];
     $(document).ready(function(){
     $('#datepicker').datepicker({
     beforeShowDay: function(date){
     var month = date.getMonth()+1;
     var year = date.getFullYear();
     var day = date.getDate();

     // Change format of date
     var newdate = day+"-"+month+'-'+year;
               
     // Set tooltip text when mouse over date
     var tooltip_text = "Booking " + newdate;
               
     // Check date in Array
     if(jQuery.inArray(newdate, highlight_dates) != -1){
     return [true, "highlight", tooltip_text ];
      }
     return [true];
      }
                 
       });
       });
</script>

Can you help me please.