Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/21/2020   22:34:05   (  -0.03,-137.18) (  -0.12,-137.55)   41.84                80
 08/22/2020   22:18:00   (  -0.03,-137.18) (   0.88,-133.02)  473.92                80
 08/24/2020   10:37:08   (   0.03,-137.17) (   0.29,-138.29)  127.92                80
 08/25/2020   10:18:24   (   0.03,-137.16) (  -0.71,-133.75)  387.33                80
 08/26/2020   22:40:21   (  -0.02,-137.14) (  -0.47,-139.06)  219.35                80
 08/27/2020   22:24:18   (  -0.02,-137.13) (   0.59,-134.54)  295.38                80
 08/29/2020   10:43:26   (  -0.01,-137.10) (   0.58,-139.81)  308.25                80
 08/30/2020   10:27:22   (  -0.01,-137.09) (  -0.42,-135.28)  206.38                80
 08/31/2020   22:46:38   (   0.01,-137.06) (  -0.81,-140.57)  400.89                80
 09/01/2020   22:30:34   (   0.00,-137.05) (   0.25,-136.05)  113.75                80
 09/03/2020   10:49:42   (  -0.00,-137.02) (   0.98,-141.31)  489.66                80
 09/04/2020   10:33:37   (  -0.00,-137.00) (  -0.02,-136.78)   24.90                80