This read-only DateAndTime value is the specific calendar date and time at which a locally-scoped one-time absolute maintenance window, defined directly on this domain rather than inherited from a higher policy level occurs. An administrator checks this to know exactly when the associated one-time jobs are scheduled to run. For example, when a fabric interconnect's own local schedule (not one pushed down from UCS Central) fires a one-time maintenance job, this date field is what an admin would look at to confirm the exact maintenance date before communicating a change freeze to stakeholders.