Table:
text: List of cities in Luxembourg
List of towns
List of towns
Name_ Canton District Area_km² Population_As_of_2005 Date_of_law_
Rumelange , Rëmeleng Esch-sur-Alzette Luxembourg 6.83 4495 4 August 1907
Vianden , Veianen Vianden Diekirch 9.67 1561 24 February 1843
Wiltz , Wolz Wiltz Diekirch 19.37 4587 24 February 1843

text: List of cities in Luxembourg
List of towns
List of towns
Name_ Canton District Area_km² Population_As_of_2005 Date_of_law_
Diekirch , Dikrech Diekirch Diekirch 12.42 6165 24 February 1843
Differdange , Déifferdeng Esch-sur-Alzette Luxembourg 22.18 19005 4 August 1907
Dudelange , Diddeleng Esch-sur-Alzette Luxembourg 21.38 17618 4 August 1907
Echternach , Iechternach Echternach Grevenmacher 20.49 4507 24 February 1843
Esch-sur-Alzette , Esch-Uelzecht Esch-sur-Alzette Luxembourg 14.35 28000 29 May 1906
Ettelbruck , Ettelbréck Diekirch Diekirch 15.18 7364 4 August 1907
Grevenmacher , Gréiwemaacher Grevenmacher Grevenmacher 16.48 3966 24 February 1843
Luxembourg City , Lëtzebuerg Luxembourg Luxembourg 51.46 76420 24 February 1843
Remich , Réimech Remich Grevenmacher 5.29 2986 24 February 1843

Question: How many Luxembourg cities had a law date of February 24, 1843?