Simultaneous Nadir Overpasses (SNOs) between NOAA-19 and NPP over region 
TLE Epoch: 2013 9 19.  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)
 09/22/2013   03:02:26   (  11.45, 157.90) 09/22/2013   03:05:39    (  10.37, 153.38)  507.63            193
 09/22/2013   15:39:02   (  19.48, 153.72) 09/22/2013   15:38:07    (  20.25, 150.11)  387.19             55
 09/23/2013   02:54:39   (  22.67, 157.92) 09/23/2013   02:51:02    (  25.89, 154.38)  506.89            217
 10/04/2013   15:08:17   (  22.59, 162.05) 10/04/2013   15:11:52    (  23.95, 157.38)  501.25            215
 10/05/2013   02:24:49   (  22.66, 165.47) 10/05/2013   02:24:42    (  21.90, 161.73)  393.69              7
 10/05/2013   04:06:54   (  22.70, 139.94) 10/05/2013   04:06:13    (  21.96, 136.34)  379.20             41
 10/05/2013   15:00:52   (  10.00, 161.77) 10/05/2013   14:57:15    (   8.42, 158.43)  406.64            217
 10/17/2013   03:33:22   (  10.10, 150.56) 10/17/2013   03:36:57    (   7.77, 146.04)  559.88            215
 10/17/2013   16:09:32   (  22.18, 146.76) 10/17/2013   16:09:24    (  22.97, 142.85)  410.40              8
 10/18/2013   03:25:56   (  22.65, 150.28) 10/18/2013   03:22:20    (  23.32, 147.11)  333.38            216