Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/12/2020   22:48:46   (  -0.01,-137.19) (  -0.77,-140.53)  381.57                80
 06/13/2020   22:27:22   (  -0.01,-137.19) (   0.27,-136.00)  135.14                80
 06/15/2020   10:51:49   (   0.01,-137.19) (   0.92,-141.27)  464.94                80
 06/16/2020   10:30:25   (   0.00,-137.19) (  -0.12,-136.74)   51.36                80
 06/18/2020   22:33:36   (   0.00,-137.17) (  -0.05,-137.51)   38.08                80
 06/19/2020   22:17:30   (   0.01,-137.16) (   0.93,-132.97)  477.62                80
 06/21/2020   10:39:17   (  -0.01,-137.15) (   0.25,-138.23)  124.25                80
 06/22/2020   10:17:53   (  -0.00,-137.13) (  -0.79,-133.71)  390.87                80
 06/23/2020   22:39:48   (   0.00,-137.10) (  -0.41,-139.00)  216.06                80
 06/24/2020   22:23:43   (   0.00,-137.09) (   0.57,-134.46)  298.68                80