,Unit,Values,Description start,--,str or datetime-like; e.g. YYYY-MM-DD,Left bound of date range end,--,str or datetime-like; e.g. YYYY-MM-DD,Right bound of date range inclusive,--,"One of {'neither', 'both', ‘left’, ‘right’}","Make the time interval closed to the ``left``, ``right``, or both sides ``both`` or neither side ``None``."