Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 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)
 05/01/2020   22:36:25   (   0.01,-137.19) (  -0.09,-137.58)   44.15                80
 05/02/2020   22:17:41   (   0.01,-137.19) (   0.94,-133.05)  472.00                80
 05/04/2020   10:39:28   (  -0.01,-137.19) (   0.25,-138.31)  128.31                80
 05/05/2020   10:18:04   (  -0.01,-137.18) (  -0.77,-133.79)  387.42                80
 05/06/2020   22:40:00   (   0.01,-137.16) (  -0.41,-139.09)  219.03                80
 05/07/2020   22:23:55   (   0.01,-137.15) (   0.62,-134.56)  296.38                80
 05/09/2020   10:45:43   (  -0.01,-137.14) (   0.58,-139.82)  305.13                80
 05/10/2020   10:24:17   (  -0.01,-137.13) (  -0.39,-135.28)  209.83                80
 05/11/2020   22:46:13   (   0.00,-137.10) (  -0.78,-140.59)  397.88                80
 05/12/2020   22:30:09   (   0.00,-137.08) (   0.25,-136.06)  116.91                80