A person is guilty of a summary offense if he, being a licensed keeper, proprietor, owner or superintendent of any public poolroom or billiard room except as otherwise provided in this section for cities of the first class, permits such place to remain open on Sunday or between the hours of one o'clock antemeridian and six o'clock antemeridian of any secular day, or knowingly allows or permits any person under the age of 18 years to be present in any public poolroom or billiard room, or if he, being a licensed keeper, proprietor, owner or superintendent of any public poolroom or billiard room having at least six tables, in a city of the first class, permits such place to remain open on Sunday, except between the hours of one o'clock postmeridian and ten o'clock postmeridian, or knowingly allows or permits any person under the age of 16 years to be present in any such public poolroom or billiard room.