Resampler.indices dict {group name -> group indices}

DatetimeIndex.to_perioddelta(freq)

Series.dt.to_pydatetime()

DatetimeIndex.sym_diff(*args, **kwargs)

TimedeltaIndex.equals(other)

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

DatetimeIndex.hour The hours of the datetime

MultiIndex.union(other)

Index.reindex(target, method=None, level=None, limit=None, tolerance=None)