Assume that on April 27th of this year you were watching copper prices. Given their trajectory, you felt they were going to decline. So you went short one contract at a price of 448.80 (this is in cents and 100ths of a cent). The initial margin is $6,050. The maintenance margin is $5,500. The minimum price movement is .05 cents (.0005 dollars) which equals $12.50. What date will you receive a margin call?