Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2012 5 30.  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)
 06/08/2012   20:35:18   (  40.02,-113.19) 06/08/2012   20:38:11    (  39.42,-115.88)  239.52            173
 06/09/2012   07:13:39   (  47.58, -75.52) 06/09/2012   07:12:57    (  47.98, -77.63)  163.97             42