The Purpose of Daylight Saving Time
Daylight Saving Time (DST) is the practice of advancing clocks during warmer months so that darkness falls at a later clock time. Typically, clocks are adjusted forward by one hour in the spring ("spring forward") and set back by one hour in autumn ("fall back") to return to standard time.
While the primary goal is to make better use of natural daylight and potentially save energy, it often creates significant scheduling challenges for international business and travel. Knowing whether your local time zone is currently observing DST is the first step to avoiding missed appointments.