Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 7 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/18/2018   10:36:50   (  -0.20,-135.48) (   0.42,-138.16)  306.03                80
 07/19/2018   10:20:46   (  -0.19,-135.49) (  -0.62,-133.64)  211.17                80
 07/20/2018   22:40:05   (   0.22,-135.52) (  -0.54,-138.96)  390.97                80
 07/21/2018   22:24:00   (   0.21,-135.53) (   0.43,-134.42)  125.98                80
 07/23/2018   10:43:09   (  -0.24,-135.51) (   0.71,-139.70)  477.49                80
 07/24/2018   10:27:06   (  -0.23,-135.51) (  -0.33,-135.17)   39.04                80
 07/26/2018   22:27:40   (   0.24,-135.53) (   0.15,-135.95)   48.19                80
 07/27/2018   22:11:35   (   0.23,-135.53) (   1.13,-131.42)  467.93                80
 07/29/2018   10:30:45   (  -0.26,-135.50) (   0.01,-136.70)  136.55                80
 07/30/2018   10:14:40   (  -0.25,-135.49) (  -0.97,-132.16)  379.22                80