Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 11 9.  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   19:23:21   (  49.95, -95.82) 11/12/2013   19:15:10    (  49.63, -97.59)  131.76            491
 11/12/2013   21:05:26   (  49.99,-121.36) 11/12/2013   20:56:49    (  50.15,-123.20)  132.50            517