Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 7 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)
 07/09/2020   22:39:58   (  -0.02,-137.19) (  -0.42,-139.02)  207.84                80
 07/10/2020   22:23:53   (  -0.02,-137.20) (   0.57,-134.49)  308.70                80
 07/12/2020   10:45:43   (   0.02,-137.20) (   0.57,-139.77)  291.34                80
 07/13/2020   10:24:18   (   0.02,-137.20) (  -0.42,-135.23)  224.72                80
 07/14/2020   22:46:15   (  -0.02,-137.19) (  -0.77,-140.54)  381.07                80
 07/15/2020   22:30:12   (  -0.01,-137.19) (   0.28,-136.02)  134.48                80
 07/17/2020   10:52:00   (  -0.01,-137.19) (   0.92,-141.28)  467.22                80
 07/18/2020   10:30:37   (  -0.01,-137.17) (  -0.13,-136.76)   47.81                80
 07/20/2020   22:33:50   (   0.01,-137.14) (  -0.06,-137.53)   44.98                80
 07/21/2020   22:17:45   (   0.01,-137.12) (   0.93,-133.00)  469.62                80