Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/04/2019   10:31:13   (  -0.02,-137.19) (  -0.08,-136.81)   43.21                80
 10/06/2019   22:37:03   (   0.01,-137.16) (  -0.11,-137.58)   48.78                80
 10/07/2019   22:15:39   (   0.01,-137.15) (   0.93,-133.05)  466.32                80
 10/09/2019   10:40:06   (  -0.02,-137.14) (   0.27,-138.32)  135.61                80
 10/10/2019   10:21:22   (  -0.02,-137.13) (  -0.77,-133.80)  379.22                80
 10/11/2019   22:40:37   (   0.02,-137.10) (  -0.45,-139.10)  228.63                80
 10/12/2019   22:24:33   (   0.00,-137.08) (   0.59,-134.57)  286.37                80
 10/14/2019   10:43:40   (   0.01,-137.06) (   0.61,-139.84)  315.89                80
 10/15/2019   10:27:34   (   0.02,-137.05) (  -0.37,-135.30)  198.62                80
 10/16/2019   22:46:50   (  -0.03,-137.00) (  -0.84,-140.60)  410.54                80