Use the year of the code

Style note²Federal courts, Illinois courts21st and 22nd editions

A codified ordinance is dated to the year of the code it is cited to, chosen as the year of any statutory code is chosen.¹

1. 1R. 12.9.2 Ordinances; R. 12.3.2 Year of Code.
2. 2A style note: the rule in note 1 allows both forms and prefers one.