Each Employer, on or before February 1 and August 1 of each calendar year shall file with the City Clerk the Semiannual Employee Residency Report. The Semiannual Employee Residency Report due February 1 is for the reporting period from July 1 to December 31st of the prior year; the Semiannual Employee Residency Report due August 1 is for the reporting period from January 1 to June 30th of that same year.