City of Baltimore
Baltimore City Code

§ 2-3. Hours.

It is unlawful for any person having a license to erect or keep a pool or billiard saloon or pool or billiard table as mentioned in § 2-2:

(1) to allow any person or persons to play on or use any pool or billiard table between the hours of 1 a.m. and 7 a.m.; or

(2) knowingly to allow a minor to play on or use any pool or billiard table, or play at any game in that saloon, or be on the premises, at any time.