Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 7 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/29/2015   22:28:15   (   0.22,-135.11) (   0.34,-134.53)   65.66                80
 08/01/2015   10:28:36   (  -0.23,-135.07) (  -0.16,-135.27)   22.71                80
 08/02/2015   10:12:31   (  -0.22,-135.06) (  -1.18,-130.73)  492.82                80
 08/03/2015   22:31:46   (   0.24,-135.05) (   0.02,-136.04)  113.16                80
 08/04/2015   22:15:40   (   0.23,-135.03) (   1.04,-131.51)  401.83                80
 08/06/2015   10:34:47   (  -0.25,-135.00) (   0.15,-136.78)  203.20                80
 08/07/2015   10:18:41   (  -0.25,-134.98) (  -0.87,-132.25)  311.48                80
 08/08/2015   22:37:56   (   0.26,-134.96) (  -0.34,-137.55)  295.34                80
 08/09/2015   22:21:50   (   0.26,-134.94) (   0.69,-133.02)  218.92                80
 08/11/2015   10:40:56   (  -0.28,-134.89) (   0.51,-138.28)  387.29                80