Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

W e’ve all experienced the shift to and from daylight saving time—whether we like it or not. In decades past, we’d wake up to ...

Residents of the United States may no longer have to remember when Standard Time and Daylight Saving Time start and end.

Many Americans have long grown frustrated with the constant time shifts. Here's what to know about the state of daylight saving time.