yes. the US grid operators also seem do go through a lot of effort to make sure there are exactly 5,184,000 cycles per 24-hour period, specifically because it

yes. the US grid operators also seem do go through a lot of effort to make sure there are exactly 5,184,000 cycles per 24-hour period, specifically because it helps those clocks keep time. I don't have any clocks that do this, so I bought one of these, which keeps accurate time without intervention from me or the power company: https://mitxela.com/projects/precision_clock_mk_iii https://mitxela.com/projects/precision_clock_mk_iii