This video describes how timestamps are assigned in CME Globex order entry and market data messaging.
For additional information please refer to the iLink Architecture topic in the Client Systems Wiki.
CME Group is the world's leading and most diverse derivatives marketplace. The company is comprised of four Designated Contract Markets (DCMs).
Further information on each exchange's rules and product listings can be found by clicking on the links to CME, CBOT, NYMEX and COMEX.