Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 10 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/02/2020   22:46:43   (  -0.03,-137.20) (  -0.79,-140.58)  385.30                80
 10/03/2020   22:30:37   (  -0.04,-137.20) (   0.20,-136.04)  131.50                80
 10/05/2020   10:49:46   (   0.03,-137.21) (   0.93,-141.33)  468.32                80
 10/06/2020   10:33:40   (   0.04,-137.21) (  -0.06,-136.79)   47.89                80
 10/08/2020   22:34:11   (  -0.03,-137.19) (  -0.10,-137.57)   42.80                80
 10/09/2020   22:18:05   (  -0.03,-137.18) (   0.89,-133.03)  472.64                80
 10/11/2020   10:37:13   (   0.02,-137.17) (   0.30,-138.30)  129.20                80
 10/12/2020   10:21:08   (   0.02,-137.16) (  -0.75,-133.78)  385.79                80
 10/13/2020   22:40:24   (  -0.01,-137.13) (  -0.45,-139.08)  222.12                80
 10/14/2020   22:24:18   (  -0.01,-137.12) (   0.54,-134.54)  292.69                80