For example, VCRs or DVRs that get their time from cable systems or the Internet probably won't be affected, but those with clocks tied to the electric current will be off a bit, Mr. Matsakis said.
Power grid change may disrupt clocks →
This will be an interesting experiment to see how dependent our timekeeping is on the power grid, Matsakis said.
AP EXCLUSIVE: Power grid change may disrupt clocks →
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