Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2014 6 23.  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)
 06/29/2014   19:33:22   (  49.97, -96.08) 06/29/2014   19:27:02    (  49.45, -99.21)  232.95            380
 06/29/2014   21:15:26   (  50.00,-121.60) 06/29/2014   21:08:33    (  49.51,-124.61)  223.13            413