Temporary, unlighted signs announcing the holding of a sale of household possessions, displayed for not more than thirty (30) days in any one (1) year, shall be allowed in any district and may be placed in any yard with the permission of the occupant. Total sign area shall not exceed eight (8) square feet. Signs may be posted for a period of five (5) days prior to the first day of sale, and shall be removed within twenty-four (24) hours following the last day of the sale. Signs may not be posted on public property. The City has the right to remove all signs without notification as is deemed necessary by the City. No permit required.