During Daylight Savings Time (DST)the Earth's rotation is slowed by one hour to lengthen the day by 1 hour.

Question

Quizplus · Accepted Answer

Daylight Savings Time does not actually slow down the Earth's rotation. Instead, people adjust their clocks by one hour to make better use of the available sunlight. This means that while our clocks may say that the day is longer by one hour during DST, the Earth's rotation remains the same.

During Daylight Savings Time (DST)the Earth's Rotation Is Slowed by One