$( window ).load( function( )
{

var inicio = jQuery('#data_pub_inicio').datepicker({
  weekStart: 1,
  viewMode: 0
});
inicio.on('changeDate', function(ev)
{
	console.log(ev.date);
	
	//...
	
	var day = ev.date.getDate().toString();
	if (day.length == 1)
	{
	  day = "0" + day;
	}
	var month = ev.date.getMonth() + 1 + "";
	if (month.length == 1)
	{
	  month = "0" + month;
	}
	var year = ev.date.getFullYear().toString();
	var data = day + "/" + month + "/" + year;
		
	jQuery("#data_pub_inicio").val(data);
	inicio.datepicker('hide');
	
//  ev.date == Javascript date object
});

var fim = jQuery('#data_pub_fim').datepicker({
  weekStart: 1,
  viewMode: 0
});
fim.on('changeDate', function(ev)
{
	console.log(ev.date);

	//...
	
	var day = ev.date.getDate().toString();
	if (day.length == 1)
	{
	  day = "0" + day;
	}
	var month = ev.date.getMonth() + 1 + "";
	if (month.length == 1)
	{
	  month = "0" + month;
	}
	var year = ev.date.getFullYear().toString();
	var data = day + "/" + month + "/" + year;
		
	jQuery("#data_pub_fim").val(data);
	fim.datepicker('hide');
	
//  ev.date == Javascript date object
});

});