def METHOD_NAME(self):
    datetimes = ['1465803236.495412',
                 '1465803236.999362',
                 '1465803237.504311',
                 '1465803238.009261',
                 '1465803238.512211',
                 '1465803239.016160',
                 '1465803239.520110',
                 '1465803240.026059',
                 '1465803240.529009']
    for datetime in datetimes:
        with self.subTest(datetime=datetime):
            dtype = number.min_numerical_convertible_type(datetime)
            self.assertEqual(dtype, numpy.float64)