Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 3 8.  Predictions up to the next  30.0 days:

Date(NOAA-19)     Time(NOAA-19)   NOAA-19 Lat/Lon   Date(NPP)     Time(NPP)    NPP Lat/Lon    Distance (km)   Time Diff(sec)
 03/19/2013   03:10:44   (  17.92, 153.54) 03/19/2013   03:12:05    (  17.15, 150.17)  367.27             81
 03/19/2013   15:47:38   (  12.41, 149.16) 03/19/2013   15:44:42    (  12.97, 146.74)  270.09            176
 03/31/2013   15:15:52   (  22.62, 158.93) 03/31/2013   15:16:34    (  23.39, 155.57)  353.90             42
 04/01/2013   02:32:18   (  22.69, 162.37) 04/01/2013   02:29:19    (  22.21, 160.01)  248.43            179