fullcalendar displaying "12a" in the title, even though I have no title format

fullcalendar displaying "12a" in the title, even though I have no title format, so I do not see an option to format this correct as I am literally passing a time. Does anyone know how to remove the 12a from where the title is displayed? I've read about this, an it appears to be taking a null from somewhere, but all fields are set with time, including the title value returned in json.