Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2012 10 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/13/2012   22:25:21   (  -0.20,-135.37) (  -0.32,-135.87)   57.13                80
 10/14/2012   22:09:18   (  -0.21,-135.36) (   0.70,-131.34)  458.35                80
 10/16/2012   10:28:27   (   0.18,-135.39) (   0.48,-136.62)  141.27                80
 10/17/2012   10:12:24   (   0.20,-135.37) (  -0.53,-132.09)  373.29                80
 10/18/2012   22:31:42   (  -0.17,-135.30) (  -0.66,-137.41)  240.38                80
 10/19/2012   22:15:39   (  -0.18,-135.28) (   0.34,-132.88)  273.80                80
 10/21/2012   10:34:50   (   0.15,-135.30) (   0.77,-138.17)  327.09                80
 10/22/2012   10:18:46   (   0.16,-135.28) (  -0.22,-133.64)  186.57                80
 10/23/2012   22:38:06   (  -0.13,-135.20) (  -0.94,-138.97)  428.55                80
 10/24/2012   22:22:02   (  -0.14,-135.18) (   0.03,-134.43)   85.16                80
 10/27/2012   10:22:30   (   0.13,-135.17) (   0.15,-135.19)    3.65                80