Tuesday, July 22, is expected to be the second of three days in 2025 where more than a millisecond could be shaved off the day due to Earth's rotation

Tuesday, July 22 will be the second-shortest day of the year, as Earth completes a full rotation in less time than usual. The planet on Tuesday will experience a shorter rotation than the typical 24 hours,

The Earth is spinning at its fastest rate since records began, and astronomers predict that 5 August will be one of the shortest day ever measured. New estimates released this month suggest that the first Tuesday of August will be around 1.