'Sets up z-axis ticks and labels that treat the z data as dates.
*tz* is a timezone string or :class:`tzinfo` instance.
Defaults to rc value.
.. note::
This function is merely provided for completeness.
Axes3D objects do not officially support dates for ticks,
and so this may or may not work as expected.
.. versionadded :: 1.1.0
This function was added, but not tested. Please report any bugs.'

def zaxis_date(self, tz=None):

    self.zaxis.axis_date(tz)
