There are ten holidays that are observed by the Federal Reserve. Although some bank branches may be open, the Fed will be closed. When they are closed, ACH transactions like direct deposit and automatic debits do not occur. This impacts things like payroll or accounts receivable.
Some holidays always occur on a business day, like Memorial Day. What happens if a holiday like July 4 falls on a weekend? If a holiday falls on a Saturday, the Federal Reserve will be open for business as usual on the Friday before. But if a holiday falls on Sunday, they will be closed on the following Monday.
This script will create a new table, and flag dates that are holidays which are observed by the Federal Reserve. When the normal holiday is a Sunday, the script will also mark the following Monday as the observed holiday.