As per machineAddict's comment, as of version 2 and later, year, month and day
have been replaced by defaultDate
, which is a Moment, supporting constructors such as an ISO 8601
date string or a Unix Epoch.
So e.g. to initialize the calendar with a given date:
$('#calendar').fullCalendar({
defaultDate: moment('2014-09-01'),
...
});