Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 9 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2020   10:30:57   (   0.05,-137.18) (  -0.02,-136.77)   45.50                80
 09/06/2020   22:34:10   (  -0.05,-137.15) (  -0.15,-137.55)   45.21                80
 09/07/2020   22:18:06   (  -0.05,-137.14) (   0.85,-133.01)  469.95                80
 09/09/2020   10:37:14   (   0.04,-137.12) (   0.32,-138.28)  132.94                80
 09/10/2020   10:21:09   (   0.04,-137.11) (  -0.68,-133.75)  381.58                80
 09/11/2020   22:40:27   (  -0.04,-137.08) (  -0.48,-139.06)  226.37                80
 09/12/2020   22:24:22   (  -0.03,-137.05) (   0.52,-134.53)  287.62                80
 09/14/2020   10:43:31   (   0.02,-137.02) (   0.65,-139.80)  316.92                80
 09/15/2020   10:27:26   (   0.02,-136.99) (  -0.35,-135.27)  196.64                80
 09/16/2020   22:46:43   (  -0.01,-136.95) (  -0.81,-140.58)  412.53                80
 09/17/2020   22:30:39   (  -0.01,-136.93) (   0.20,-136.04)  100.94                80