Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2020   10:45:44   (  -0.02,-137.20) (   0.58,-139.83)  300.78                80
 04/24/2020   10:24:19   (  -0.02,-137.20) (  -0.44,-135.31)  215.31                80
 04/25/2020   22:46:15   (   0.02,-137.19) (  -0.75,-140.61)  390.00                80
 04/26/2020   22:30:11   (   0.02,-137.18) (   0.27,-136.08)  125.66                80
 04/28/2020   10:51:58   (  -0.01,-137.17) (   0.92,-141.34)  476.07                80
 04/29/2020   10:30:34   (  -0.01,-137.15) (  -0.10,-136.81)   39.00                80
 05/01/2020   22:33:45   (   0.01,-137.11) (  -0.12,-137.57)   53.25                80
 05/02/2020   22:17:40   (   0.01,-137.09) (   0.91,-133.05)  461.47                80
 05/04/2020   10:39:28   (  -0.00,-137.07) (   0.29,-138.31)  141.64                80
 05/05/2020   10:18:03   (  -0.00,-137.05) (  -0.74,-133.78)  372.64                80