KS> I'm pretty sure the GPS satellites know the date anyway...
 RL> The satellite may or may not (remember the Hubel telescope), but the
 RL> satellite isn't the avionics.
Well, considering they know the time within a fraction of a microsecond,
I imagine the date is fairly trivial.  What avionics do you have in
mind that need it anyway?  No vor/tac/dme/mbr/xponder does as far as I
know...
... This is my very favorite tagline!
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