"If you read the explanation of why there was not enough time for Oswald to have done all the things that the Warren Commission credited him with doing between the time he entered the bus near the Depository and shooting Tippit, you would conclude that all the witnesses in the case had assembled on the morning of November 22 to synchronize their watches and take a pledge to check them at crucial moments as the day's events unfolded.
The reality is that, like the spring-driven clocks in most people's houses in 1963, what would have been the crucial clocks and watches probably varied in the time they showed by several minutes."
Larry Sturdivan
(The JFK Myths, 2005, pg. 179)