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) (   0.33,-134.53)   65.88                80
 08/01/2015   10:28:37   (  -0.23,-135.07) (  -0.21,-135.28)   22.52                80
 08/02/2015   10:12:30   (  -0.22,-135.06) (  -1.17,-130.73)  493.06                80
 08/03/2015   22:31:46   (   0.24,-135.06) (   0.01,-136.04)  112.64                80
 08/04/2015   22:15:40   (   0.23,-135.04) (   1.03,-131.51)  402.42                80
 08/06/2015   10:34:46   (  -0.25,-135.00) (   0.16,-136.78)  202.67                80
 08/07/2015   10:18:41   (  -0.25,-134.98) (  -0.86,-132.25)  312.08                80
 08/08/2015   22:37:56   (   0.26,-134.97) (  -0.29,-137.56)  294.47                80
 08/09/2015   22:21:50   (   0.26,-134.95) (   0.67,-133.01)  219.87                80
 08/11/2015   10:40:57   (  -0.28,-134.90) (   0.46,-138.29)  386.39                80