Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 1 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/30/2020   10:17:45   (   0.04,-137.21) (  -0.72,-133.70)  399.33                80
 01/31/2020   22:42:23   (  -0.04,-137.21) (  -0.44,-139.01)  205.85                80
 02/01/2020   22:20:58   (  -0.04,-137.20) (   0.56,-134.48)  309.86                80
 02/03/2020   10:45:27   (   0.05,-137.19) (   0.64,-139.75)  292.04                80
 02/04/2020   10:24:02   (   0.05,-137.18) (  -0.36,-135.22)  223.10                80
 02/05/2020   22:45:59   (  -0.06,-137.16) (  -0.80,-140.53)  383.74                80
 02/06/2020   22:29:55   (  -0.06,-137.15) (   0.20,-136.00)  130.89                80
 02/08/2020   10:51:43   (   0.07,-137.12) (   0.99,-141.27)  472.52                80
 02/09/2020   10:30:19   (   0.07,-137.10) (  -0.01,-136.74)   41.60                80
 02/11/2020   22:33:32   (  -0.07,-137.05) (  -0.14,-137.52)   52.77                80