Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 9 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2020   09:59:19   (  -0.13,-128.41) (  -0.01,-128.84)   49.71                80
 09/28/2020   09:43:15   (  -0.13,-128.42) (  -1.05,-124.32)  467.74                80
 09/29/2020   22:05:10   (   0.13,-128.39) (  -0.17,-129.62)  139.91                80
 09/30/2020   21:43:46   (   0.13,-128.40) (   0.88,-125.09)  377.26                80
 10/02/2020   10:05:33   (  -0.13,-128.45) (   0.31,-130.36)  217.85                80
 10/03/2020   09:49:28   (  -0.13,-128.46) (  -0.73,-125.84)  299.29                80
 10/04/2020   22:11:24   (   0.13,-128.43) (  -0.47,-131.14)  308.58                80
 10/05/2020   21:49:58   (   0.13,-128.43) (   0.51,-126.60)  207.92                80
 10/07/2020   10:11:47   (  -0.13,-128.47) (   0.61,-131.89)  388.81                80
 10/08/2020   09:55:41   (  -0.14,-128.47) (  -0.37,-127.35)  127.41                80