Every code county, by public local law, shall establish a specified number of days, not to exceed forty-five, in which the board of county commissioners may meet in each year for the purpose of enacting public local laws. These legislative days may but need not be consecutive and may be allotted as the legislative body, by public local law determines. The first legislative session shall be held on the first ordinary business day which is sixty days subsequent to the effective date of code home rule status and shall be fifteen days long. These fifteen days shall not count as part of the annual forty-five legislative days. Any legislative day not specified or not determinable by the local law shall be preceded by a notice published in a newspaper of general circulation in the county within a period of from not less than three to not more than fourteen days prior thereto.