Every owner or occupant of any dwelling house or other building, or proprietor or lessee of any enclosed lot or premises, and every person having the charge or control of any church, hall or public building within the City shall, during the winter season whenever there is a fall of snow, and by ten o'clock (10:00) A.M. on every morning thereafter, clear the sidewalks in front of or adjoining such house, building or premises from snow and ice, and keep the same conveniently free therefrom. In case the snow and ice are so congealed as not to be removed without difficulty or injury to the pavement, such person shall strew the same with ashes, sand, salt or sawdust; and shall in addition at all times keep such sidewalks clear and free from dirt, filth, weeds or other obstructions so as to allow pedestrians the safe and unobstructed use of the same; and every owner, occupant or other person aforesaid who shall permit or allow such sidewalks to be or remain covered with snow, or other obstructions, contrary to the provisions of this Section, shall be deemed guilty of maintaining a nuisance; provided, however, that no person shall be obliged to clear any such sidewalk on Sunday or during the continuance of any snow storm. (1994 Code)