Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 9 19.  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   18:32:10   (  49.97, -83.43) 09/22/2013   18:30:17    (  49.42, -86.48)  228.05            113
 09/22/2013   20:14:14   (  49.95,-108.93) 09/22/2013   20:11:47    (  49.42,-111.86)  218.22            147
 09/23/2013   06:54:55   (  29.18, -73.41) 09/23/2013   06:48:56    (  29.66, -75.83)  239.89            359
 09/23/2013   08:37:33   (  27.22, -99.47) 09/23/2013   08:31:00    (  27.67,-101.74)  230.09            393