Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 6 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/08/2021   10:39:28   (   0.01,-137.16) (   0.27,-138.30)  129.78                80
 06/09/2021   10:18:05   (  -0.00,-137.15) (  -0.77,-133.77)  384.97                80
 06/10/2021   22:42:42   (   0.00,-137.13) (  -0.41,-139.08)  221.94                80
 06/11/2021   22:21:18   (   0.01,-137.11) (   0.57,-134.55)  292.42                80
 06/13/2021   10:45:46   (  -0.01,-137.08) (   0.63,-139.81)  311.58                80
 06/14/2021   10:24:22   (  -0.01,-137.06) (  -0.41,-135.29)  202.37                80
 06/15/2021   22:46:20   (   0.01,-137.03) (  -0.77,-140.60)  405.77                80
 06/16/2021   22:30:15   (   0.01,-137.01) (   0.22,-136.06)  107.99                80
 06/18/2021   10:52:03   (  -0.00,-136.97) (   0.99,-141.33)  496.85                80
 06/19/2021   10:30:40   (  -0.00,-136.94) (  -0.05,-136.80)   16.58                80