Day start to friday

is there any possible way to change the start day other than Sunday or Monday. I need it to be Friday or Saturday. please help

It is not possible for month view, but for week view you can use = function(date){ var shift=(2+date.getDay())%7; return this.date_part(this.add(date,-1*shift,"day")); };

thank you it’s works
Fortunately it’s works for me in month view also[My default view is week ]