-- https://docs.oracle.com/en/database/oracle/oracle-database/23/sqlrf/domain_order.html
INSERT INTO calendar_dates 
VALUES(DATE'2023-05-01', 'MON'), 
      (DATE'2023-05-02', 'TUE'), 
      (DATE'2023-05-05', 'FRI'), 
      (DATE'2023-05-08', 'mon');