Market Regulation Services Inc. is calling on brokerage firms to synchronize their watches. The new Universal Market Integrity Rules require that each marketplace and brokerage firm synchronize clocks used for recording the time or date of any event which must be recorded under the rules.

RS, the regulator for the Toronto Stock Exchange Inc. and the Canadian Venture Exchange Inc., will use the National Research Council Canada Cesium Clock as its clock. The NRCC clock is currently used by the TSX and CDNX to synchronize the clocks in each exchange’s trading systems.

Under the UMIR, each firm must synchronize with the NRCC clock, or some other atomic clock utilized for determining the International Atomic Time.