Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/31/2020   10:30:28   (   0.00,-137.20) (  -0.07,-136.76)   49.16                80
 06/02/2020   22:33:40   (   0.00,-137.19) (  -0.06,-137.54)   39.84                80
 06/03/2020   22:17:35   (   0.00,-137.18) (   0.92,-133.00)  476.05                80
 06/05/2020   10:39:22   (  -0.01,-137.17) (   0.27,-138.26)  125.43                80
 06/06/2020   10:17:58   (  -0.01,-137.16) (  -0.77,-133.74)  389.97                80
 06/07/2020   22:39:53   (   0.00,-137.14) (  -0.44,-139.03)  216.39                80
 06/08/2020   22:23:48   (   0.00,-137.12) (   0.60,-134.50)  298.86                80
 06/10/2020   10:45:36   (  -0.00,-137.11) (   0.59,-139.77)  303.29                80
 06/11/2020   10:24:10   (   0.00,-137.09) (  -0.39,-135.23)  211.77                80
 06/12/2020   22:46:06   (  -0.00,-137.06) (  -0.76,-140.53)  395.19                80