A JavaScript object that FullCalendar uses to store information about a calendar event. It is exposed in various places of the API such as getEventById and provides methods for dynamic manipulation. It was originally parsed from a plain object. var calendar = new Calendar(calendarEl, { timeZone: 'UTC', events: [ { id: 'a', title: 'my event', start: '2018-09-01' } ] }) var event = calendar.getEvent