Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 11 3.  Predictions up to the next  10.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 11/12/2013   19:23:22   (  49.98, -95.84) 11/12/2013   19:15:11    (  49.66, -97.61)  131.64            491
 11/12/2013   21:05:26   (  49.97,-121.35) 11/12/2013   20:56:50    (  50.18,-123.22)  135.20            516