sets the date format for the X-Axis of the Week and Units views
scheduler.config.day_date = "%F %j";
...
scheduler.init('scheduler_here', new Date(2013, 7, 5), "week");
The config will take effect only if it is applied before the first initialization of the scheduler:
scheduler.config.day_date = "%F %j";
scheduler.init('scheduler_here', new Date(2020, 7, 5), "day");
If you want to change the date format after the initialization, you need to redefine the day_date template:
var formatDayDate = scheduler.date.date_to_str("%F %j");
scheduler.templates.day_date = function(date) {
return formatDayDate(date);
};