Md. Code Ann., Alco. Bev. & Cannabis § 20-2004

(a) (1) A holder of a Class A beer and wine license may sell beer and wine: (i) on Monday through Saturday, from 6 a.m. to 2 a.m. the following day; and (ii) on Sunday, from 10 a.m. to 2 a.m. the following day. (2) (i) The Board may grant a special Sunday opening permit to the license holder. (ii) The permit authorizes the holder to sell beer for off–premises consumption on Sunday from 10 a.m. to 2 a.m. the following day. (iii) The annual permit fee is $140 in addition to the annual fee for the license. (iv) The permit is not considered a separate class of license and, if it is granted, the privilege shall be incorporated into the license.

(b) (1) A holder of a Class B beer and wine license may sell beer and wine: (i) on Monday through Saturday, for on– and off–premises consumption, from 6 a.m. to 2 a.m. the following day; and (ii) on Sunday: 1. subject to paragraph (2) of this subsection, for on–premises consumption: A. from 10 a.m. to 2 a.m. the following day; or B. for a specific event that the Board has approved, the hours for the event that are set by the Board; and 2. for off–premises consumption, from 1 p.m. to 2 a.m. the following day. (2) The license holder may not sell beer or wine at a bar or counter on Sunday.

(c) (1) A holder of a Class C beer and wine license may sell beer and wine: (i) on Monday through Saturday, for on–premises consumption, from 6 a.m. to 2 a.m. the following day; and (ii) subject to paragraph (2) of this subsection, on Sunday, for on–premises consumption: 1. from 10 a.m. to 2 a.m. the following day; or 2. for a specific event that the Board has approved, the hours for the event that are set by the Board. (2) The license holder may not sell beer or wine at a bar or counter on Sunday.