Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 20.  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)  125.43                80
 05/21/2020   10:18:01   (  -0.01,-137.20) (  -0.76,-133.76)  391.47                80
 05/22/2020   22:42:37   (   0.01,-137.20) (  -0.41,-139.07)  212.52                80
 05/23/2020   22:21:13   (   0.01,-137.20) (   0.63,-134.54)  303.88                80
 05/25/2020   10:45:40   (  -0.01,-137.19) (   0.57,-139.80)  296.94                80
 05/26/2020   10:24:15   (  -0.01,-137.19) (  -0.41,-135.26)  218.92                80
 05/27/2020   22:46:11   (   0.00,-137.17) (  -0.76,-140.57)  386.73                80
 05/28/2020   22:30:07   (   0.00,-137.16) (   0.28,-136.04)  128.83                80
 05/30/2020   10:51:54   (   0.00,-137.15) (   0.92,-141.30)  473.19                80
 05/31/2020   10:30:28   (   0.00,-137.14) (  -0.06,-136.76)   42.07                80
 06/02/2020   22:33:39   (  -0.00,-137.10) (  -0.12,-137.53)   49.77                80