Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/06/2019   22:37:04   (   0.01,-137.20) (  -0.09,-137.58)   44.01                80
 10/07/2019   22:15:39   (   0.01,-137.20) (   0.94,-133.06)  472.16                80
 10/09/2019   10:37:27   (  -0.02,-137.21) (   0.25,-138.33)  127.83                80
 10/10/2019   10:21:22   (  -0.01,-137.21) (  -0.79,-133.80)  388.57                80
 10/11/2019   22:40:37   (   0.00,-137.19) (  -0.43,-139.10)  217.43                80
 10/12/2019   22:24:33   (  -0.00,-137.19) (   0.61,-134.58)  298.62                80
 10/14/2019   10:43:40   (   0.01,-137.19) (   0.58,-139.85)  301.93                80
 10/15/2019   10:27:35   (   0.02,-137.19) (  -0.40,-135.31)  213.77                80
 10/16/2019   22:46:50   (  -0.02,-137.16) (  -0.81,-140.61)  393.45                80
 10/17/2019   22:28:06   (  -0.03,-137.15) (   0.23,-136.08)  121.53                80
 10/19/2019   10:49:53   (   0.03,-137.13) (   0.97,-141.35)  480.87                80