Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/20/2020   22:40:01   (   0.02,-137.20) (  -0.40,-139.10)  216.99                80
 04/21/2020   22:23:57   (   0.02,-137.20) (   0.62,-134.57)  299.72                80
 04/23/2020   10:45:44   (  -0.02,-137.20) (   0.57,-139.84)  300.59                80
 04/24/2020   10:24:19   (  -0.02,-137.20) (  -0.45,-135.31)  215.55                80
 04/25/2020   22:46:16   (   0.02,-137.19) (  -0.74,-140.61)  389.56                80
 04/26/2020   22:30:11   (   0.02,-137.18) (   0.28,-136.08)  126.18                80
 04/28/2020   10:51:58   (  -0.01,-137.17) (   0.92,-141.34)  475.63                80
 04/29/2020   10:30:34   (  -0.01,-137.16) (  -0.11,-136.81)   39.52                80
 05/01/2020   22:33:45   (   0.00,-137.12) (  -0.11,-137.58)   52.49                80
 05/02/2020   22:17:40   (   0.00,-137.10) (   0.91,-133.05)  462.26                80