Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/11/2020   10:51:54   (  -0.00,-137.21) (   0.91,-141.34)  470.64                80
 03/12/2020   10:30:30   (  -0.00,-137.21) (  -0.10,-136.81)   46.04                80
 03/14/2020   22:33:42   (   0.00,-137.21) (  -0.10,-137.58)   42.67                80
 03/15/2020   22:17:37   (   0.00,-137.21) (   0.91,-133.04)  473.69                80
 03/17/2020   10:39:26   (  -0.00,-137.21) (   0.25,-138.32)  126.57                80
 03/18/2020   10:18:01   (  -0.01,-137.20) (  -0.76,-133.79)  389.19                80
 03/19/2020   22:39:58   (   0.01,-137.19) (  -0.39,-139.10)  217.38                80
 03/20/2020   22:23:54   (   0.01,-137.18) (   0.62,-134.57)  298.45                80
 03/22/2020   10:45:41   (  -0.01,-137.19) (   0.60,-139.83)  302.07                80
 03/23/2020   10:24:17   (  -0.01,-137.18) (  -0.41,-135.30)  213.40                80
 03/24/2020   22:46:14   (   0.01,-137.15) (  -0.73,-140.61)  394.06                80