Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/04/2020   10:39:29   (  -0.01,-137.19) (   0.21,-138.32)  128.04                80
 05/05/2020   10:18:03   (  -0.01,-137.19) (  -0.76,-133.78)  387.87                80
 05/06/2020   22:39:59   (   0.01,-137.18) (  -0.43,-139.08)  217.84                80
 05/07/2020   22:23:55   (   0.01,-137.17) (   0.60,-134.56)  297.73                80
 05/09/2020   10:45:42   (  -0.01,-137.15) (   0.59,-139.82)  303.91                80
 05/10/2020   10:24:18   (  -0.01,-137.14) (  -0.44,-135.29)  211.17                80
 05/11/2020   22:46:13   (   0.01,-137.11) (  -0.80,-140.58)  395.87                80
 05/12/2020   22:30:09   (   0.00,-137.10) (   0.23,-136.05)  119.10                80
 05/14/2020   10:51:56   (  -0.00,-137.08) (   0.96,-141.32)  483.21                80
 05/15/2020   10:30:32   (  -0.00,-137.06) (  -0.07,-136.79)   31.50                80