Maryland Code, Local Government § 20-408

(2)(i) Cecil County, on or before the 10th day of each month;

(ii) Talbot County and Wicomico County, on or before the 20th day of each month;

(iii) a code county in the Eastern Shore class established in § 9-302 of this article, Calvert County, Carroll County, Charles County, Dorchester County, Frederick County, Garrett County, St. Mary's County, and Somerset County, on or before the 21st day of each month; and

(iv) Washington County, on or before the 25th day of each month.