I totally meant to say '365 days ish'. Totally fluffed the line, we can measure year length in the coral I mentioned, obviously not week length, just to prove I had a brain fart mid fact. I was making the point that we can't use earths orbit as a timepiece as it is not a constant. We know it is slowing.
I hate using wiki, but I have as much interest in defending my obvious facts (simple google search) as I do in saving unicorns, so...
The development of atomic clocks has led to many scientific and technological advances such as a worldwide system of precise position measurement (Global Positioning System), and applications in the Internet, which depend critically on frequency and time standards.
As for everything I mentioned running off atomic clocks, I'm repeating a journal I read. The Internet is used to manage the stock market therefore the time has to be as accurate as possible for all markets, your Microsoft windows/mac clock is set via an atomic clock if it's hooked to the net. The Internet uses atomic clocks. Gps would not work without atomic clocks due to the need for accurate triangulation, the time is used to measure distance and speed. Cell phones require satellites all of which are now kept in orbit via atomic clocks, used for positioning and orbit alterations. TiVo was of course a joke (if you were intending to reply with the fact it wasn't funny....go shoot yourself) however, TiVo receives its time input from the Internet, which has its time dictated via atomic clocks.
So where did I go wrong matey? Or are you just one of those guys?