According to Time and Date, a website that tracks time and time zones, the current record holder for the shortest day on record was July 5, 2024, which was 1.66 milliseconds shorter than 24 hours. Each year since 2020 has seen a new shortest day on record.

So far, the shortest day ever recorded was July 5, 2024, when Earth rotated 1.66 milliseconds faster than usual. This year, scientists predict three shorter days in July and August. On July 9, the day is expected to be 1.30 milliseconds shorter, followed by an even shorter -1.38 milliseconds on July 22 and a -1.51 milliseconds on Aug. 5.

Today is set to be one of shortest days in the Earth’s recorded history – meaning that it will be just under 24 hours. According to data from the International Earth Rotation and Reference Systems Service (IERS), the change will result in the day being between 1.3 and 1.6 milliseconds shorter than usual.