need help with this excel question.

File Home Insert Page Layout Formulas Data Review View Insert Function AutoSum Recently Financial Logical Text Date a Lookup & Math & - Used - Time Reference Trig Function Library H13 More Functions Define Name - Puse in Formula Name Manager Create from Selection Defined Names Trace Preces Trace Depen Remove Arro CDEF Problem: Memorial Day is always the last Monday in May. Set up a worksheet in which you can enter the year, and the worksheet determines the date of Memorial Day