Clockmaker Scott Gow adjusts the hands of a clock at the Electric Time Company in Medfield, Mass., in 2024. An international body voted to do away with leap seconds and let the clocks slip until they're out of alignment by a full hour.

Clockmaker Scott Gow adjusts the hands of a clock at the Electric Time Company in Medfield, Mass., in 2024. An international body voted to do away with leap seconds and let the clocks slip until they're out of alignment by a full hour.