Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 12 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/03/2019   22:49:10   (  -0.00,-137.19) (  -0.75,-140.62)  389.84                80
 12/04/2019   22:27:45   (   0.00,-137.18) (   0.25,-136.08)  126.00                80
 12/06/2019   10:52:11   (   0.00,-137.18) (   0.95,-141.34)  474.69                80
 12/07/2019   10:30:46   (   0.00,-137.17) (  -0.05,-136.81)   40.99                80
 12/09/2019   22:36:37   (  -0.01,-137.14) (  -0.09,-137.58)   50.51                80
 12/10/2019   22:15:11   (  -0.01,-137.12) (   0.91,-133.05)  464.42                80
 12/12/2019   10:39:37   (   0.02,-137.10) (   0.29,-138.31)  137.98                80
 12/13/2019   10:18:12   (   0.01,-137.08) (  -0.71,-133.77)  376.26                80
 12/14/2019   22:42:47   (  -0.02,-137.04) (  -0.49,-139.07)  232.32                80
 12/15/2019   22:21:22   (  -0.01,-137.01) (   0.52,-134.54)  281.42                80