Change the date of second dropdown based on first datetime picker

I have been trying to solve this puzzle for last 2 days,but could not know where am i doing wrong. Problem : I have two dropdowns of jquery calendar where first input has the default date set for today. when selecting a date from this input the second input should select its date as the minimum allowed date.

I have achieved so far with the below code.

$.datetimepicker.setLocale('en');
var currentdate = new Date();
var datetime = currentdate.getDate() + "/"
                + (currentdate.getFullYear())  + "/"
                + (currentdate.getMonth()+1) + "  "
                + currentdate.getHours() + ":"
                + currentdate.getMinutes();


    function getCurrentDate(){

    var currentdate = new Date();
    var datetime1 = (currentdate.getDate()+1) + "/"
                + (currentdate.getMonth()+1) + "/"
                + (currentdate.getFullYear())  + " "
                + (currentdate.getHours()+3) + ":"
                + currentdate.getMinutes();

    var datetime2 = (currentdate.getDate()+1) + "/"
                + (currentdate.getMonth()+1) + "/"
                + (currentdate.getFullYear())  + " "
                 + "11:59 PM";

            $('#datetimepicker,#datetimepicker1,#datetimepicker2,#datetimepicker3').datetimepicker({step:30});
            $('#datetimepicker').datetimepicker({

            onClose: function(selectedDate) {
             $( "#datetimepicker1" ).datetimepicker({minDate:selectedDate,startDate:selectedDate} );
             }

            });

    //document.getElementById('datetimepicker').value=datetime1
    //document.getElementById('datetimepicker1').value=datetime2
    //document.getElementById('datetimepicker2').value=datetime1
    //document.getElementById('datetimepicker3').value=datetime1

    }
$('#datetimepicker').datetimepicker({

 dayOfWeekStart : 1,
lang:'en',
disabledDates:['1986/01/08','1986/01/09','1986/01/10'],
startDate:  datetime,
minDate : datetime
});
$('#datetimepickerr1').datetimepicker({

 dayOfWeekStart : 1,
lang:'en',
disabledDates:['1986/01/08','1986/01/09','1986/01/10'],
startDate:  datetime,
minDate : datetime
});

$('#datetimepicker1').datetimepicker({

 dayOfWeekStart : 1,
lang:'en',
disabledDates:['1986/01/08','1986/01/09','1986/01/10'],
});



$('#datetimepicker2,#datetimepicker3').datetimepicker({
dayOfWeekStart : 1,
lang:'en',
disabledDates:['1986/01/08','1986/01/09','1986/01/10'],
startDate:  datetime,
minDate : datetime
});

$('#datetimepicker,#datetimepicker1,#datetimepicker2,#datetimepicker3').datetimepicker({step:30});
$('#datetimepicker').datetimepicker({

onClose: function(selectedDate) {
  $( "#datetimepicker1" ).datetimepicker({minDate:selectedDate,startDate:selectedDate} );
  }

});

Issue :: When I select a date from second dropdown,it changes the min allowed date for the first input.

It can be seen live at http://ift.tt/298XK6O