What are the duties and privileges of an ad hoc judge in the Supreme Court?
The duties and privileges of an ad hoc judge in the Supreme Court, as mentioned in the context, are as follows:

1. Attend the sittings of the Supreme Court at the time and for the period specified, giving priority to this attendance over other duties of their office.
2. Have all the jurisdiction, powers, and privileges of a Judge of the Supreme Court while attending the sittings.
3. Discharge the duties of a Judge of the Supreme Court during their attendance at the sittings.