Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/20/2019   22:18:22   (   0.03,-137.20) (   0.97,-133.10)  467.96                80
 08/22/2019   10:40:10   (  -0.04,-137.21) (   0.23,-138.36)  131.20                80
 08/23/2019   10:18:45   (  -0.04,-137.21) (  -0.78,-133.83)  385.40                80
 08/24/2019   22:40:42   (   0.04,-137.20) (  -0.36,-139.14)  219.85                80
 08/25/2019   22:24:38   (   0.05,-137.20) (   0.66,-134.61)  296.21                80
 08/27/2019   10:46:25   (  -0.05,-137.20) (   0.54,-139.87)  304.68                80
 08/28/2019   10:25:01   (  -0.05,-137.19) (  -0.47,-135.34)  210.83                80
 08/29/2019   22:46:57   (   0.06,-137.17) (  -0.72,-140.64)  395.79                80
 08/30/2019   22:30:53   (   0.06,-137.16) (   0.30,-136.11)  119.58                80
 09/01/2019   10:52:40   (  -0.06,-137.15) (   0.91,-141.37)  481.97                80
 09/02/2019   10:31:15   (  -0.06,-137.13) (  -0.12,-136.84)   33.13                80