Q:

Why do we change the clocks twice a year?

A:

Quick Answer

The clocks change twice each year to accommodate Daylight Saving Time. In the U.S., this time period begins on the second Sunday in March and ends on the first Sunday in November.

Continue Reading
Why do we change the clocks twice a year?
Credit: Getty Images North America Getty Images News Getty Images

Full Answer

Clocks move forward one hour in March and move backward one hour in November. Most people remember the changes with the catch phrase "spring forward, fall back," referring to the season when the changes take place. The U.S. government initially started Daylight Saving Time during World War I to save energy for wartime production. The federal government enacted Daylight Saving Time as a permanent change in 1966. Starting in 2007, the government extended the time period by four weeks as a means to save energy through longer daylight hours.

Learn more about Time & Calendars

Related Questions

  • Q:

    When do we set our clocks back?

    A:

    People in the United States set their clocks back at the end of Daylight Savings Time every year, which usually occurs in October or November. Not all countries in the world use Daylight Saving Time, but many do. It is most popular in the Western Hemisphere.

    Full Answer >
    Filed Under:
  • Q:

    When do we turn the clocks back?

    A:

    Most Americans turn back the clock 1 hour on the first Sunday in November each year, and the official change happens at 2 a.m. This date marks the beginning of Standard Time and the end of Daylight Saving Time, which begins on the second Sunday of March.

    Full Answer >
    Filed Under:
  • Q:

    How do you fix pendulum clocks?

    A:

    To fix pendulum clocks, adjust the casing at the clock's bottom, the pendulum and the clock's beat if the time piece runs too slow or fast. If the clock works intermittently or does not function, bring the arm and hands to the correct position and adjust the clock's beat. If the clock's chimes are incorrect, adjust the hour and minute hands. Adjust the clock's weights appropriately.

    Full Answer >
    Filed Under:
  • Q:

    When does the United States turn back its clocks?

    A:

    The United States and other areas observing both standard and daylight savings time turn the clocks back on the first Sunday of November at 2:00 a.m. Prior to 2007, the change traditionally took place on the last Sunday of October at 2:00 a.m.

    Full Answer >
    Filed Under:

Explore