Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/16/2020   22:17:42   (   0.02,-137.19) (   0.96,-133.06)  470.42                80
 04/18/2020   10:39:29   (  -0.02,-137.20) (   0.24,-138.33)  129.15                80
 04/19/2020   10:18:05   (  -0.02,-137.20) (  -0.79,-133.80)  387.92                80
 04/20/2020   22:40:01   (   0.01,-137.21) (  -0.41,-139.10)  215.10                80
 04/21/2020   22:23:56   (   0.01,-137.22) (   0.61,-134.57)  301.78                80
 04/23/2020   10:45:44   (  -0.01,-137.22) (   0.58,-139.84)  298.60                80
 04/24/2020   10:24:19   (  -0.02,-137.22) (  -0.44,-135.31)  217.70                80
 04/25/2020   22:46:15   (   0.01,-137.21) (  -0.75,-140.61)  386.87                80
 04/26/2020   22:30:11   (   0.01,-137.21) (   0.28,-136.08)  129.04                80
 04/28/2020   10:51:58   (  -0.01,-137.20) (   0.92,-141.34)  472.79                80
 04/29/2020   10:30:34   (  -0.01,-137.18) (  -0.11,-136.82)   42.50                80