Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 2 13.  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)
 02/22/2013   02:35:44   (  13.11, 162.96) 02/22/2013   02:38:28    (  12.27, 159.32)  405.01            164
 02/22/2013   15:12:25   (  17.68, 158.71) 02/22/2013   15:10:59    (  18.25, 155.99)  294.17             86
 03/06/2013   14:44:05   (  16.12, 165.58) 03/06/2013   14:45:50    (  17.92, 162.24)  408.15            105
 03/06/2013   16:24:18   (  22.61, 141.67) 03/06/2013   16:25:47    (  23.37, 138.20)  364.28             89
 03/07/2013   03:40:48   (  22.65, 145.11) 03/07/2013   03:38:31    (  22.17, 142.66)  257.00            137