Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 8 31.  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   (  -0.05,-137.19) (  -0.82,-140.57)  385.39                80
 09/01/2020   22:30:34   (  -0.04,-137.19) (   0.24,-136.05)  130.55                80
 09/03/2020   10:49:43   (   0.04,-137.18) (   0.94,-141.32)  470.30                80
 09/04/2020   10:33:38   (   0.04,-137.18) (  -0.07,-136.78)   45.45                80
 09/06/2020   22:34:11   (  -0.04,-137.15) (  -0.10,-137.56)   45.65                80
 09/07/2020   22:18:06   (  -0.04,-137.14) (   0.90,-133.03)  469.67                80
 09/09/2020   10:37:15   (   0.03,-137.13) (   0.27,-138.30)  132.58                80
 09/10/2020   10:21:10   (   0.03,-137.11) (  -0.73,-133.76)  382.02                80
 09/11/2020   22:40:27   (  -0.02,-137.08) (  -0.49,-139.06)  226.35                80
 09/12/2020   22:24:22   (  -0.02,-137.06) (   0.52,-134.53)  287.71                80
 09/14/2020   10:43:31   (   0.01,-137.03) (   0.60,-139.81)  316.27                80