Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 9 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/25/2020   10:37:19   (   0.04,-137.21) (   0.28,-138.29)  122.66                80
 09/26/2020   10:21:14   (   0.04,-137.21) (  -0.75,-133.76)  393.37                80
 09/27/2020   22:40:30   (  -0.03,-137.20) (  -0.47,-139.06)  213.13                80
 09/28/2020   22:24:25   (  -0.03,-137.19) (   0.57,-134.54)  302.85                80
 09/30/2020   10:43:32   (   0.02,-137.20) (   0.61,-139.81)  297.57                80
 10/01/2020   10:27:28   (   0.03,-137.19) (  -0.43,-135.28)  218.28                80
 10/02/2020   22:46:43   (  -0.02,-137.17) (  -0.79,-140.58)  388.61                80
 10/03/2020   22:30:38   (  -0.03,-137.17) (   0.19,-136.05)  126.97                80
 10/05/2020   10:49:46   (   0.02,-137.16) (   0.94,-141.33)  474.46                80
 10/06/2020   10:33:41   (   0.03,-137.15) (  -0.04,-136.79)   40.54                80
 10/08/2020   22:34:11   (  -0.02,-137.10) (  -0.12,-137.57)   53.45                80