Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 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)
 05/22/2020   22:42:37   (   0.01,-137.20) (  -0.44,-139.06)  212.56                80
 05/23/2020   22:21:12   (   0.01,-137.20) (   0.59,-134.53)  303.82                80
 05/25/2020   10:45:40   (  -0.01,-137.19) (   0.60,-139.80)  296.92                80
 05/26/2020   10:24:15   (  -0.01,-137.19) (  -0.44,-135.27)  218.90                80
 05/27/2020   22:46:11   (   0.01,-137.17) (  -0.73,-140.57)  386.82                80
 05/28/2020   22:30:06   (   0.01,-137.16) (   0.25,-136.03)  128.68                80
 05/30/2020   10:51:53   (  -0.00,-137.15) (   0.94,-141.30)  473.23                80
 05/31/2020   10:30:29   (  -0.00,-137.13) (  -0.09,-136.77)   41.96                80
 06/02/2020   22:33:40   (   0.00,-137.10) (  -0.09,-137.53)   49.85                80
 06/03/2020   22:17:34   (   0.00,-137.08) (   0.89,-132.99)  464.89                80
 06/05/2020   10:36:41   (   0.00,-137.05) (   0.31,-138.26)  138.39                80