Showing posts with label US Naval Observatory. Show all posts
Showing posts with label US Naval Observatory. Show all posts

Jul 5, 2011

How to Change Time

The government is about to begin year-long experiments that may literally change time, at least the time on your microwave or coffee pot. It may begin as early as this month.

The time service department at the U.S. Naval Observatory, one of two official timekeeping agencies in the federal government, and the group that oversees the U.S. power grid is proposing an experiment which would allow more frequency variation in electricity than it does now. The purpose is to find ways to make the grid more cost effective.

Some clocks keep time based on the rate of the electrical current that powers them. If the current varies, clocks run fast or slow. Power companies monitor and correct the frequency to keep it constant.

Obviously, computers, TVs with cable, and other devices that are not plugged or get the time signal from another source in will not be affected.

The North American Electric Reliability Corp. which runs the nation's interlocking web of transmission lines and power plants says East Coast clocks may run as much as 20 minutes fast over a year, with other parts of the country having less of an effect. It is also possible that the effects will be negligible. The good news is that it is set to happen before the election, so if your fuses start popping, you can correct it in the voting booth. As Kermit says, "Time's fun when you are having flies."