Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 8 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)
 08/03/2013   20:52:49   (  49.96,-118.93) 08/03/2013   20:48:56    (  49.56,-121.34)  179.15            233
 08/04/2013   07:35:09   (  23.84, -84.87) 08/04/2013   07:27:36    (  24.24, -86.70)  191.30            453
 08/04/2013   09:17:47   (  21.89,-110.88) 08/04/2013   09:09:40    (  22.25,-112.58)  179.06            487