It's NOT JUST a BELL problem in THEIR Clock controlling the DVR ON/OFF times......it's that the NETWORKS that SOURCE the Programs each have their own internal "Clock"....
Aside on GPS ACCURACY
, incl. LAND-BASED, mostly along the COAST for Boats, Differential GPS:
...Nothing to do with TIME:
They only calculate GPS Coordinates in the chosen, currently WGS84 Dual Ellipsoid System with EGM96 (Earth Gravitational Model 1996) Geoid [Oblate Spheroid], revised in 2004
, that [poorly] approximates the SHAPE of the Earth, which is Fatter in one direction than the other and very much FLATTENED due to the extremely fast rotation. And just to keep things interesting they have continued to refine these coordinate estimates ever since GPS was launched, so there are SIGNIFICANT (tens of feet) differences between measurements made today and measurements made in earlier years [e.g. WGS60/66/72]:
[Oblate Spheroid Math]
So there is a VERY COMPLICATED COORDINATE CONVERSION [or more typically APPROXIMATE CONVERSION] required if trying to line up say WGS72 PAPER MAPS to current WGS84 GPS/DGPS Measurements.....and it's even MORE difficult trying to line up to PAPER MAPS drawn BEFORE they were published in ANY of the GPS Coordinate Models.
And just to keep everyone from thinking that ANY GPS/DGPS measurement is anywhere ACCURATE, bear in mind that "typical" Continental Drift is on the order of feet to hundreds of feet per YEAR.....and even SMALLER in California where the Pacific Coast Plate is moving NORTH-WEST at about 3-inches/year along the San Andreas Fault, while the American Continental Plate is moving SOUTH at about 1-inch/year....relative to GPS Coordinates.
GPS Coordinates are especially INACCURATE for HEIGHT if you use a Mapping program such as RADIO MOBILE to prepare PATH PROFILE Charts. Shorelines can be off by 100's of feet in altitude, meaning that many parts of Los Angeles are erroneously displayed as being UNDERWATER [I tweak the Altitude Colorization controls to overcome this issue]. The more accurate Mapping Programs must use a Height Coordinate Correction File, which provides the requisite corrections, depending on WHERE in the WORLD the GPS Measurement [or Topo Data Base] is being used.
We now return you to your regularly scheduled program.....