A trader works on the floor of the New York Stock ExchangeThrough Herbert Lash NEW YORK (Reuters) – U.S. stock and possibility exchanges said on Tuesday they reached a general agreement on find out how to make stronger securities markets after federal regulators ordered them to give you new principles in the wake of Nasdaq's three-hour trading halt in August. Exchanges, including New York Inventory Trade operator NYSE Euronext and Nasdaq OMX, stated they agreed on the timing and nature of certain regulatory proposals, including principles designed to give protection to the securities knowledge processor (SIP) on the heart of the August 22 buying and selling halt. The exchanges were given a smooth time limit of 60 days after a September 12 meeting on the Securities and ExChange Fee's headquarters in Washington with SEC Chair Mary Jo White.