The Clerk shall cause to be published all ordinances, enactments, proceedings and official notices requiring publication as follows:
1. Time. If notice of an election, hearing, or other official action is required by this Code of Ordinances or law, the notice must be published at least once, not less than four (4) or more than twenty (20) days before the date of the election, hearing, or other action, unless otherwise provided by law.
(Code of Iowa, Sec. 362.3[1])
2. Manner of Publication. A publication required by this Code of Ordinances or law must be in a newspaper published at least once weekly and having general circulation in the City.
(Code of Iowa, Sec. 362.3[2])