I'm making a holiday booking application and obviously you don't need to book off holidays that are already given to you, so I need to know how I can disable, Christmas, for example from the date picker every year without me having to change the code every year.

This is my jQuery UI date picker code so far:

<script>

$(function() {

  $(#from).datepicker({

      beforeShowDay: $.datepicker.noWeekends,

      defaultDate: today,

      changeMonth: true,

      numberOfMonths: 1,

      minDate: today,

      dateFormat: dd/mm/yy,

      onClose: function(selectedDate) {

        $( #to ).datepicker(option, minDate, selectedDate);

      }

  });

  $(#to).datepicker({

    beforeShowDay: $.datepicker.noWeekends,

    defaultDate: today,

    changeMonth: true,

    numberOfMonths: 1,

    minDate: today,

    dateFormat: dd/mm/yy,

    onClose: function(selectedDate) {

      $(#from).datepicker(option, maxDate, selectedDate);

    }

  });

});

</script>