Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2018   06:11:21   (   0.02, -75.21) (  -0.70, -72.02)  363.35                80
 12/24/2018   18:33:17   (  -0.02, -75.23) (  -0.48, -77.33)  239.44                80
 12/25/2018   18:17:11   (  -0.02, -75.24) (   0.50, -72.79)  278.15                80
 12/27/2018   06:39:00   (   0.02, -75.26) (   0.63, -78.07)  320.49                80
 12/28/2018   06:17:34   (   0.02, -75.27) (  -0.34, -73.53)  197.39                80
 12/29/2018   18:39:31   (  -0.02, -75.30) (  -0.82, -78.84)  404.23                80
 12/30/2018   18:20:46   (  -0.02, -75.32) (   0.21, -74.32)  114.29                80
 01/01/2019   06:45:13   (   0.03, -75.35) (   0.98, -79.58)  482.64                80
 01/02/2019   06:23:49   (   0.03, -75.37) (  -0.06, -75.06)   36.06                80
 01/04/2019   18:29:40   (  -0.03, -75.43) (  -0.12, -75.83)   45.47                80