The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test ...

Every November, most Americans turn their clocks back an hour, marking the end of daylight saving time and the return to ...

When will the clocks set back one hour this year? We gathered everything you should know about this year's Daylight Saving ...

Optical lattice clocks are emerging timekeeping devices based on tens of thousands of ultracold atoms trapped in an optical ...

A person who develops age-related diseases earlier in life, or has other biological changes associated with aging (such as ...

Do you wake up every day wishing you could just get a little more sleep? May just one more hour. If that's the case, get your pillow and blankets ready. Daylight saving time is ending and here's what ...

To change the time on a Fitbit, you'll need to adjust the time zone setting for your device on the Fitbit mobile app or desktop website.

When it comes to the iPhone's built-in apps, some have come and gone throughout the years. For example, Apple removed the initial Newsstand app and swapped it with Apple News in 2015. However, some ...

Daylight saving time will end for 2025 on the first Sunday of November, when clocks "fall back" one hour. Despite ongoing debate in Congress, a decision to permanently end the time change has not been ...

Daylight saving time will end on Sunday, Nov. 2, 2025, at 2 a.m. The primary purpose of daylight saving time is to better utilize natural daylight and conserve energy. Efforts to make daylight saving ...

Correction & clarification: A prior version of this story misstated the origin of the U.S. law on daylight saving time. Sunsets are earlier, the nights getting longer and the leaves are turning — ...