Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 2 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/14/2020   10:39:17   (   0.03,-137.21) (   0.25,-138.28)  120.35                80
 02/15/2020   10:17:52   (   0.03,-137.21) (  -0.75,-133.74)  395.43                80
 02/16/2020   22:39:49   (  -0.04,-137.21) (  -0.46,-139.04)  209.59                80
 02/17/2020   22:23:44   (  -0.04,-137.20) (   0.54,-134.51)  305.91                80
 02/19/2020   10:45:33   (   0.05,-137.18) (   0.64,-139.78)  296.87                80
 02/20/2020   10:24:08   (   0.05,-137.17) (  -0.36,-135.25)  218.24                80
 02/21/2020   22:46:05   (  -0.05,-137.16) (  -0.79,-140.56)  387.87                80
 02/22/2020   22:30:01   (  -0.05,-137.14) (   0.21,-136.03)  127.14                80
 02/24/2020   10:51:49   (   0.06,-137.12) (   0.97,-141.30)  476.11                80
 02/25/2020   10:30:25   (   0.05,-137.11) (  -0.03,-136.77)   38.56                80