Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 9 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/01/2014   10:33:05   (   0.26,-135.32) (   0.25,-135.19)   13.85                80
 10/03/2014   22:36:23   (  -0.24,-135.34) (  -0.41,-135.99)   74.34                80
 10/04/2014   22:20:20   (  -0.25,-135.34) (   0.60,-131.46)  442.18                80
 10/06/2014   10:39:32   (   0.23,-135.34) (   0.54,-136.75)  160.32                80
 10/07/2014   10:23:29   (   0.24,-135.34) (  -0.48,-132.22)  355.71                80
 10/08/2014   22:42:49   (  -0.21,-135.35) (  -0.68,-137.55)  250.02                80
 10/09/2014   22:26:46   (  -0.23,-135.35) (   0.28,-133.01)  266.07                80
 10/11/2014   10:45:57   (   0.20,-135.34) (   0.85,-138.30)  336.69                80
 10/12/2014   10:29:54   (   0.21,-135.33) (  -0.11,-133.76)  178.76                80
 10/13/2014   22:49:14   (  -0.18,-135.33) (  -1.03,-139.08)  428.57                80