Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 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)
 03/17/2020   10:39:25   (   0.02,-137.20) (   0.28,-138.31)  126.53                80
 03/18/2020   10:18:01   (   0.02,-137.20) (  -0.73,-133.78)  389.13                80
 03/19/2020   22:39:58   (  -0.02,-137.19) (  -0.42,-139.09)  216.43                80
 03/20/2020   22:23:53   (  -0.01,-137.18) (   0.59,-134.56)  299.21                80
 03/22/2020   10:45:41   (   0.01,-137.17) (   0.63,-139.82)  302.66                80
 03/23/2020   10:24:16   (   0.01,-137.16) (  -0.39,-135.29)  212.60                80
 03/24/2020   22:46:14   (  -0.01,-137.15) (  -0.76,-140.61)  393.91                80
 03/25/2020   22:30:09   (  -0.00,-137.14) (   0.25,-136.08)  121.28                80
 03/27/2020   10:51:56   (   0.00,-137.12) (   0.96,-141.34)  481.08                80
 03/28/2020   10:30:32   (   0.00,-137.10) (  -0.05,-136.81)   33.41                80