Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 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)
 05/17/2020   22:36:23   (   0.01,-137.18) (  -0.10,-137.56)   43.96                80
 05/18/2020   22:17:38   (   0.01,-137.17) (   0.94,-133.03)  471.75                80
 05/20/2020   10:39:26   (  -0.01,-137.15) (   0.26,-138.29)  130.63                80
 05/21/2020   10:18:01   (  -0.01,-137.14) (  -0.78,-133.77)  384.50                80
 05/22/2020   22:39:57   (   0.01,-137.12) (  -0.45,-139.06)  221.61                80
 05/23/2020   22:23:52   (   0.01,-137.10) (   0.58,-134.53)  293.12                80
 05/25/2020   10:45:39   (  -0.01,-137.07) (   0.61,-139.79)  310.80                80
 05/26/2020   10:24:15   (  -0.01,-137.05) (  -0.42,-135.27)  203.32                80
 05/27/2020   22:46:10   (   0.00,-137.01) (  -0.80,-140.56)  404.50                80
 05/28/2020   22:30:06   (   0.00,-136.99) (   0.24,-136.03)  109.36                80
 05/30/2020   10:51:53   (   0.00,-136.94) (   0.96,-141.29)  495.66                80