Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 9 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/22/2014   22:42:26   (  -0.29,-135.19) (  -0.77,-137.47)  258.55                80
 09/23/2014   22:26:22   (  -0.30,-135.22) (   0.23,-132.93)  260.85                80
 09/25/2014   10:45:30   (   0.28,-135.25) (   0.93,-138.20)  336.18                80
 09/26/2014   10:29:25   (   0.29,-135.27) (  -0.07,-133.67)  182.55                80
 09/27/2014   22:48:43   (  -0.27,-135.29) (  -1.10,-138.98)  420.07                80
 09/28/2014   22:32:38   (  -0.28,-135.31) (  -0.10,-134.44)   98.37                80
 09/30/2014   10:51:47   (   0.25,-135.33) (   1.25,-139.71)  499.80                80
 10/01/2014   10:35:42   (   0.26,-135.34) (   0.24,-135.18)   17.91                80
 10/03/2014   22:36:15   (  -0.24,-135.35) (  -0.40,-135.96)   69.37                80
 10/04/2014   22:20:10   (  -0.25,-135.36) (   0.61,-131.42)  448.13                80