DatetimeIndex.is_monotonic alias for is_monotonic_increasing (deprecated)

DatetimeIndex.tzinfo Alias for tz attribute

DatetimeIndex.values return the underlying data as an ndarray

DatetimeIndex.ravel(order='C')

DatetimeIndex.putmask(mask, value)

DatetimeIndex.is_mixed()

DatetimeIndex.to_perioddelta(freq)

DatetimeIndex.sym_diff(*args, **kwargs)

DatetimeIndex.size return the number of elements in the underlying data

DatetimeIndex.base return the base object if the memory of the underlying data is shared