Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2013 10 10.  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)
 10/17/2013   19:03:28   (  49.95, -91.06) 10/17/2013   19:02:18    (  49.40, -94.39)  247.48             70
 10/17/2013   20:45:33   (  49.99,-116.59) 10/17/2013   20:43:49    (  49.46,-119.79)  237.31            104
 10/18/2013   18:52:28   (  49.99, -88.32) 10/18/2013   18:43:51    (  51.41, -90.55)  222.19            517