Internally we carry month numbers such as '03'. This dictionary translates month numbers
to month names.
MONTH_NAME_MAP = {
'01': 'Jan', '02': 'Feb', '03': 'Mar',
'04': 'Apr', '05': 'May', '06': 'Jun',
'07': 'Jul', '08': 'Aug', '09': 'Sep',
'10': 'Oct', '11': 'Nov', '12': 'Dec' }