Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 9 14.  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)
 09/22/2013   18:32:11   (  50.00, -83.44) 09/22/2013   18:30:18    (  49.46, -86.50)  227.86            113
 09/22/2013   20:14:15   (  49.98,-108.95) 09/22/2013   20:11:48    (  49.46,-111.87)  218.03            147
 09/23/2013   06:54:55   (  29.21, -73.41) 09/23/2013   06:48:56    (  29.68, -75.82)  239.79            359
 09/23/2013   08:37:32   (  27.25, -99.46) 09/23/2013   08:30:59    (  27.69,-101.73)  230.00            393