Daylight Saving Time (DST) is the practice of advancing clocks forward by one hour during the warmer months so that darkness falls at a later clock time. 💡 Core Mechanics
Spring Forward: Clocks move ahead one hour on the second Sunday in March, shifting evening light later but causing a temporary loss of sleep.
Fall Back: Clocks return to Standard Time on the first Sunday in November, granting an extra hour of sleep but bringing earlier darkness.
Exemptions: In the United States, Hawaii, most of Arizona, and various territories opt out of the system entirely. 📜 Historical Origins Daylight Saving Time
Daylight Saving Time and time zones in the U.S. are defined in the U.S. Code, Title 15, Chapter 6, Subchapter IX – Standard Time .
US Naval Observatory Astronomical Applications Department (.mil)