'Set the event data.'

def __init__(self):

    middle_of_event = (dt_util.now() - dt_util.dt.timedelta(minutes=30))
    self.event = {'start': {'dateTime': middle_of_event.isoformat()}, 'end': {'dateTime': (middle_of_event + dt_util.dt.timedelta(minutes=60)).isoformat()}, 'summary': 'Current    Event'}
