Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2017 12 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/01/2017   07:08:30   (   0.01, -89.33) (  -0.70, -86.29)  347.06                80
 12/02/2017   19:30:25   (  -0.01, -89.34) (  -0.52, -91.59)  256.08                80
 12/03/2017   19:14:20   (  -0.01, -89.35) (   0.52, -87.06)  261.00                80
 12/05/2017   07:36:08   (   0.00, -89.35) (   0.65, -92.33)  339.17                80
 12/06/2017   07:14:42   (   0.00, -89.36) (  -0.33, -87.79)  177.68                80
 12/07/2017   19:36:38   (   0.00, -89.37) (  -0.82, -93.10)  425.56                80
 12/08/2017   19:20:33   (   0.01, -89.38) (   0.16, -88.57)   91.89                80
 12/11/2017   07:20:56   (  -0.01, -89.40) (  -0.04, -89.31)   10.63                80
 12/13/2017   19:24:07   (   0.02, -89.44) (  -0.12, -90.09)   73.54                80
 12/14/2017   19:08:01   (   0.02, -89.46) (   0.86, -85.55)  444.70                80