It's a common problem, but anybody with any knowledge about time, ESPECIALLY people in the computer/programming field, need to know that there's a HUGE difference between EST and EDT, and the time zone (Eastern Time Zone).
Like I said, I have ZERO stake in this, and so am just a potential arbiter, and you are wrong on this point.
This is why everything should be quoted in UTC, but if I recall the error was made by TheSwede, not burnside.