Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2014 7 6.  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)
 07/12/2014   18:50:08   (  49.95, -85.11) 07/12/2014   18:43:00    (  49.45, -88.11)  223.18            428
 07/12/2014   20:32:12   (  49.98,-110.64) 07/12/2014   20:24:31    (  49.50,-113.51)  213.37            461