Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 6 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2020   10:45:36   (   0.00,-137.20) (   0.58,-139.77)  292.73                80
 06/11/2020   10:24:11   (   0.00,-137.22) (  -0.46,-135.24)  225.51                80
 06/12/2020   22:48:47   (  -0.01,-137.24) (  -0.76,-140.53)  376.24                80
 06/13/2020   22:27:22   (  -0.00,-137.25) (   0.29,-136.01)  141.93                80
 06/15/2020   10:51:50   (   0.00,-137.27) (   0.90,-141.27)  455.72                80
 06/16/2020   10:30:25   (   0.00,-137.28) (  -0.14,-136.75)   61.99                80
 06/18/2020   22:33:36   (   0.01,-137.30) (  -0.02,-137.51)   23.92                80
 06/19/2020   22:17:30   (   0.01,-137.31) (   0.96,-132.97)  493.28                80
 06/21/2020   10:39:18   (  -0.00,-137.31) (   0.22,-138.24)  106.12                80
 06/22/2020   10:17:53   (  -0.00,-137.31) (  -0.82,-133.71)  410.45                80