Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 9 22.  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)
 09/23/2013   02:54:40   (  22.70, 157.92) 09/23/2013   02:51:02    (  25.86, 154.39)  501.37            218
 10/04/2013   15:08:17   (  22.62, 162.06) 10/04/2013   15:11:52    (  23.92, 157.37)  500.49            215
 10/05/2013   02:24:50   (  22.69, 165.46) 10/05/2013   02:24:42    (  21.93, 161.73)  393.17              8
 10/05/2013   04:06:54   (  22.67, 139.95) 10/05/2013   04:06:12    (  21.93, 136.35)  378.86             42
 10/05/2013   15:00:53   (  10.04, 161.77) 10/05/2013   14:57:17    (   8.33, 158.41)  414.95            216
 10/17/2013   03:33:26   (  10.07, 150.54) 10/17/2013   03:37:02    (   8.08, 145.97)  548.93            216
 10/17/2013   16:09:41   (  21.93, 146.68) 10/17/2013   16:09:28    (  22.71, 142.79)  408.96             13
 10/18/2013   03:26:02   (  22.65, 150.26) 10/18/2013   03:22:26    (  23.62, 147.03)  347.67            216