Once again, it's time to adjust your clocks to go off of Daylight Time and move to Standard Time and "Fall back". This will add daylight in the morning and result in earlier sunsets in the evening.

What you need to know

  • Turn clocks back 1 hour
  • Sunday, November 4th at 2:00 a.m. local time

A Little Bit more About Time

The annual adjustment of our clocks has been a contentious issue since it was first introduced in 1918. According to the Time Service Dept., U.S. Naval Observatory in Washington, DC, "It was finally codified into Federal law in 1966 with further revisions in 1986 and 2005. Prior to 1966 the implementation of Daylight Time was a matter left to individual states unless otherwise directed by the President."

  • Originally the idea was implemented to improve wartime production and save energy.
  • Only one time-scale is kept at the Naval Observatory, Coordinated Universal Time, or UTC.
Lost Time is Never Found Again - Benjamin Franklin

Click here to read A Brief History of USNO Timekeeping

Time Service Dept., U.S. Naval Observatory, Washington, DC







USNO Clock Vault, Washington, DC