Thank you for pointing that out. I based the holidays on a list from the company where I worked at the time, and they didn't take that one off. It would be easy enough to add the code for that.
After MLK Day, insert:
--President's Day (3rd Monday)
([Month] = 2
AND [DAY_OF_WEEK] = 2
AND DATE_ID IN (SELECT
MIN(DATE_ID) + 14
FROM
DATE_DIM
WHERE
[Month] = 2
AND [DAY_OF_WEEK] = 2
GROUP BY
[Year])
)