Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 18.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/19/2019   22:34:26   (   0.03,-137.17) (  -0.09,-137.62)   51.52                80
 08/20/2019   22:18:22   (   0.03,-137.16) (   0.93,-133.09)  464.07                80
 08/22/2019   10:40:10   (  -0.04,-137.15) (   0.22,-138.36)  138.08                80
 08/23/2019   10:18:45   (  -0.04,-137.13) (  -0.80,-133.83)  376.80                80
 08/24/2019   22:40:42   (   0.04,-137.11) (  -0.40,-139.13)  230.72                80
 08/25/2019   22:24:37   (   0.05,-137.09) (   0.62,-134.60)  283.60                80
 08/27/2019   10:46:25   (  -0.05,-137.06) (   0.59,-139.86)  320.21                80
 08/28/2019   10:25:00   (  -0.05,-137.03) (  -0.43,-135.33)  193.58                80
 08/29/2019   22:46:56   (   0.06,-136.99) (  -0.77,-140.63)  415.39                80
 08/30/2019   22:30:52   (   0.06,-136.96) (   0.25,-136.10)   98.28                80