The Assessor shall, annually, prepare an assessment roll of all property in the City and shall place a value, in accordance with law, upon all taxable property, both real and personal, in the City. The value shall be determined by the Assessor in accordance with established assessment rules, techniques, and procedures. The value shall be determined according to the facts existing of the date fixed by law as tax day, for the assessment of property throughout the State, for the year for which the roll is made, and no change of the status or of the location of any such property, after that day, shall be considered by the Assessor or the Board of Review.