cf
AuxiliaryCoordinate.
leap_month
The leap_month CF property.
>>> c.leap_month = 2 >>> c.leap_month 2 >>> del c.leap_month
>>> c.setprop('leap_month', 11) >>> c.getprop('leap_month') 11 >>> c.delprop('leap_month')
cf.AuxiliaryCoordinate.history
cf.AuxiliaryCoordinate.leap_year