Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/15/2020   10:30:32   (  -0.01,-137.19) (  -0.10,-136.79)   44.78                80
 05/17/2020   22:33:43   (   0.01,-137.18) (  -0.11,-137.56)   43.87                80
 05/18/2020   22:17:38   (   0.01,-137.17) (   0.93,-133.03)  472.04                80
 05/20/2020   10:39:26   (  -0.01,-137.15) (   0.26,-138.29)  130.09                80
 05/21/2020   10:18:01   (  -0.01,-137.14) (  -0.77,-133.76)  385.18                80
 05/22/2020   22:39:57   (   0.01,-137.13) (  -0.40,-139.07)  220.87                80
 05/23/2020   22:23:52   (   0.01,-137.11) (   0.57,-134.53)  294.02                80
 05/25/2020   10:45:39   (  -0.00,-137.08) (   0.62,-139.79)  309.57                80
 05/26/2020   10:24:15   (   0.00,-137.06) (  -0.42,-135.26)  204.72                80
 05/27/2020   22:46:10   (  -0.01,-137.02) (  -0.80,-140.56)  403.01                80