Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 7 14.  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)
 07/21/2013   15:15:16   (  22.59, 159.78) 07/21/2013   15:16:45    (  23.47, 155.83)  415.74             89
 07/22/2013   02:31:42   (  22.65, 163.23) 07/22/2013   02:29:28    (  22.03, 160.29)  310.13            134
 08/03/2013   03:43:00   (  18.46, 146.22) 08/03/2013   03:44:12    (  17.59, 142.40)  415.42             72
 08/03/2013   16:19:54   (  11.91, 141.87) 08/03/2013   16:16:49    (  12.56, 138.99)  321.10            185