Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/31/2020   22:46:38   (  -0.04,-137.19) (  -0.83,-140.57)  385.48                80
 09/01/2020   22:30:34   (  -0.04,-137.19) (   0.23,-136.05)  130.49                80
 09/03/2020   10:49:42   (   0.04,-137.19) (   0.94,-141.32)  470.16                80
 09/04/2020   10:33:38   (   0.04,-137.18) (  -0.06,-136.78)   45.61                80
 09/06/2020   22:34:11   (  -0.04,-137.16) (  -0.10,-137.56)   45.47                80
 09/07/2020   22:18:06   (  -0.04,-137.15) (   0.90,-133.03)  469.84                80
 09/09/2020   10:37:15   (   0.03,-137.13) (   0.28,-138.30)  132.22                80
 09/10/2020   10:21:10   (   0.03,-137.12) (  -0.72,-133.76)  382.40                80
 09/11/2020   22:40:28   (  -0.02,-137.08) (  -0.44,-139.07)  226.07                80
 09/12/2020   22:24:23   (  -0.02,-137.06) (   0.57,-134.54)  288.03                80