Simultaneous Nadir Overpasses (SNOs) near US between NOAA-19 and NPP
TLE Epoch: 2012 12 12.  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)
 12/22/2012   07:35:18   (  49.92, -79.50) 12/22/2012   07:37:06    (  50.56, -82.79)  244.82            108
 12/22/2012   09:17:23   (  49.91,-105.02) 12/22/2012   09:18:36    (  50.55,-108.17)  234.96             73
 12/22/2012   17:25:27   (  49.99, -68.36) 12/22/2012   17:23:58    (  49.62, -70.57)  163.99             89