Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 7 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/18/2016   10:28:02   (  -0.18,-135.34) (  -0.21,-135.24)   11.75                80
 07/20/2016   22:28:32   (   0.19,-135.27) (   0.04,-136.01)   84.43                80
 07/21/2016   22:12:27   (   0.18,-135.24) (   1.03,-131.48)  429.34                80
 07/23/2016   10:31:34   (  -0.20,-135.20) (   0.13,-136.75)  175.55                80
 07/24/2016   10:15:29   (  -0.19,-135.17) (  -0.86,-132.21)  337.80                80
 07/25/2016   22:34:44   (   0.21,-135.11) (  -0.35,-137.51)  273.45                80
 07/26/2016   22:18:39   (   0.20,-135.08) (   0.64,-132.97)  239.54                80
 07/28/2016   10:37:46   (  -0.22,-135.03) (   0.52,-138.24)  366.62                80
 07/29/2016   10:21:41   (  -0.22,-134.99) (  -0.53,-133.72)  145.84                80