Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/17/2019   10:31:14   (  -0.04,-137.19) (  -0.11,-136.85)   38.33                80
 08/19/2019   22:34:26   (   0.05,-137.17) (  -0.08,-137.62)   52.12                80
 08/20/2019   22:18:22   (   0.05,-137.16) (   0.94,-133.09)  463.43                80
 08/22/2019   10:40:10   (  -0.05,-137.15) (   0.21,-138.36)  138.37                80
 08/23/2019   10:18:46   (  -0.05,-137.13) (  -0.81,-133.83)  376.50                80
 08/24/2019   22:40:42   (   0.06,-137.10) (  -0.39,-139.13)  231.46                80
 08/25/2019   22:24:38   (   0.06,-137.08) (   0.62,-134.60)  282.85                80
 08/27/2019   10:46:25   (  -0.06,-137.05) (   0.58,-139.86)  320.66                80
 08/28/2019   10:26:26   (  -0.07,-137.03) (  -0.43,-135.33)  193.11                 6
 08/29/2019   22:46:57   (   0.07,-136.98) (  -0.76,-140.63)  416.30                80