Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/08/2020   22:46:11   (  -0.01,-137.20) (  -0.75,-140.60)  387.05                80
 03/09/2020   22:30:06   (  -0.00,-137.19) (   0.26,-136.06)  128.44                80
 03/11/2020   10:51:54   (   0.00,-137.18) (   0.91,-141.34)  473.58                80
 03/12/2020   10:30:30   (  -0.00,-137.17) (  -0.10,-136.81)   41.54                80
 03/14/2020   22:33:42   (   0.01,-137.14) (  -0.10,-137.58)   50.51                80
 03/15/2020   22:17:37   (   0.01,-137.12) (   0.91,-133.04)  464.22                80
 03/17/2020   10:39:26   (  -0.00,-137.10) (   0.26,-138.32)  138.88                80
 03/18/2020   10:18:01   (   0.00,-137.08) (  -0.75,-133.79)  375.51                80
 03/19/2020   22:39:57   (  -0.00,-137.05) (  -0.45,-139.09)  232.45                80
 03/20/2020   22:23:53   (  -0.00,-137.03) (   0.56,-134.56)  281.77                80
 03/22/2020   10:45:41   (   0.00,-137.00) (   0.61,-139.83)  321.97                80