Insert new event according to the day of the week

I wonder if it's possible to insert a new event, only according to the day of the week, ignoring the days of the month.

So far, I have been able to insert new events in run-time, but only by passing the date in the format, yyyy-mm-dd .

$('#btn').click(function(){
        $('#calendario').fullCalendar(
            'renderEvent',
            {
                title: 'Novo evento',
                start: '2016-04-06T08:00:00',
                end:'2016-04-06T10:30:00'
            }
            );
    });  

I wonder if you can enter the data according to the day of the week (Mon, Tue, Wed, Thurs, Fri ...). ?