Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 12 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/03/2020   10:42:57   (  -0.00,-137.23) (   0.56,-139.78)  290.46                80
 12/04/2020   10:26:51   (   0.00,-137.22) (  -0.45,-135.24)  225.82                80
 12/05/2020   22:46:06   (   0.00,-137.21) (  -0.74,-140.55)  379.65                80
 12/06/2020   22:30:01   (   0.00,-137.21) (   0.27,-136.01)  136.34                80
 12/08/2020   10:49:07   (  -0.00,-137.20) (   0.91,-141.28)  464.93                80
 12/09/2020   10:33:02   (  -0.00,-137.19) (  -0.10,-136.74)   50.68                80
 12/11/2020   22:33:32   (  -0.00,-137.15) (  -0.06,-137.51)   40.62                80
 12/12/2020   22:17:26   (  -0.01,-137.14) (   0.95,-132.98)  474.52                80
 12/14/2020   10:39:11   (   0.01,-137.11) (   0.29,-138.23)  128.24                80
 12/15/2020   10:17:46   (   0.01,-137.09) (  -0.73,-133.70)  386.27                80
 12/16/2020   22:39:41   (  -0.00,-137.05) (  -0.44,-139.00)  222.02                80