Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 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)
 05/20/2020   10:39:26   (  -0.00,-137.20) (   0.27,-138.29)  125.44                80
 05/21/2020   10:18:01   (  -0.01,-137.20) (  -0.77,-133.76)  391.47                80
 05/22/2020   22:42:37   (   0.01,-137.20) (  -0.40,-139.07)  212.49                80
 05/23/2020   22:21:13   (   0.01,-137.20) (   0.63,-134.54)  303.94                80
 05/25/2020   10:45:40   (  -0.01,-137.20) (   0.56,-139.80)  296.88                80
 05/26/2020   10:24:15   (  -0.01,-137.19) (  -0.41,-135.26)  219.00                80
 05/27/2020   22:46:11   (   0.00,-137.18) (  -0.75,-140.57)  386.61                80
 05/28/2020   22:30:06   (   0.00,-137.17) (   0.22,-136.03)  128.98                80
 05/30/2020   10:51:54   (   0.00,-137.15) (   0.91,-141.30)  473.03                80
 05/31/2020   10:30:28   (   0.00,-137.14) (  -0.07,-136.76)   42.21                80