(20)To better monitor reportable events, Directive 2014/65/EU harmonises the synchronisation of business clocks for trading venues and their members. To ensure that, in the context of the consolidation of data, timestamps reported by different entities can be compared meaningfully, it is appropriate to extend the requirements for harmonisation of the synchronisation of business clocks to designated publishing entities, systematic internalisers, APAs and CTPs. Due to the level of technical expertise required to specify the requirements for application of a synchronised business clock, ESMA should be empowered to develop draft regulatory technical standards to specify the level of accuracy to which the business clocks should be synchronised.