Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/12/2020   10:30:30   (  -0.00,-137.21) (  -0.12,-136.81)   46.27                80
 03/14/2020   22:33:42   (   0.00,-137.21) (  -0.09,-137.58)   41.94                80
 03/15/2020   22:17:38   (   0.00,-137.21) (   0.92,-133.05)  474.51                80
 03/17/2020   10:39:26   (  -0.00,-137.22) (   0.24,-138.32)  125.58                80
 03/18/2020   10:18:01   (  -0.00,-137.21) (  -0.77,-133.79)  390.35                80
 03/19/2020   22:39:58   (   0.00,-137.20) (  -0.43,-139.09)  215.82                80
 03/20/2020   22:23:53   (   0.00,-137.20) (   0.58,-134.56)  300.17                80
 03/22/2020   10:45:42   (  -0.00,-137.20) (   0.58,-139.84)  300.15                80
 03/23/2020   10:24:17   (  -0.00,-137.19) (  -0.43,-135.30)  215.46                80
 03/24/2020   22:46:13   (   0.00,-137.17) (  -0.77,-140.61)  391.63                80