Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 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)
 09/01/2019   10:52:40   (  -0.03,-137.20) (   0.89,-141.37)  475.25                80
 09/02/2019   10:31:16   (  -0.03,-137.19) (  -0.13,-136.84)   40.89                80
 09/04/2019   22:34:28   (   0.03,-137.18) (  -0.04,-137.61)   49.23                80
 09/05/2019   22:18:22   (   0.03,-137.17) (   0.92,-133.07)  466.35                80
 09/07/2019   10:40:10   (  -0.03,-137.15) (   0.23,-138.34)  135.52                80
 09/08/2019   10:18:46   (  -0.04,-137.14) (  -0.80,-133.81)  379.60                80
 09/09/2019   22:40:42   (   0.04,-137.12) (  -0.39,-139.12)  227.24                80
 09/10/2019   22:24:38   (   0.04,-137.10) (   0.63,-134.59)  287.72                80
 09/12/2019   10:46:25   (  -0.04,-137.08) (   0.58,-139.85)  314.84                80
 09/13/2019   10:25:01   (  -0.04,-137.07) (  -0.45,-135.32)  199.89                80