Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/07/2018   06:11:23   (   0.00, -75.18) (  -0.72, -72.02)  361.30                80
 12/08/2018   18:33:19   (  -0.01, -75.19) (  -0.47, -77.32)  242.40                80
 12/09/2018   18:17:14   (  -0.01, -75.20) (   0.50, -72.78)  274.75                80
 12/11/2018   06:39:02   (   0.02, -75.21) (   0.63, -78.06)  324.58                80
 12/12/2018   06:17:37   (   0.02, -75.22) (  -0.34, -73.52)  192.85                80
 12/13/2018   18:42:13   (  -0.02, -75.24) (  -0.85, -78.83)  409.78                80
 12/14/2018   18:20:49   (  -0.02, -75.25) (   0.18, -74.30)  108.02                80
 12/16/2018   06:45:16   (   0.03, -75.27) (   1.00, -79.57)  490.12                80
 12/17/2018   06:23:51   (   0.03, -75.29) (  -0.02, -75.04)   27.96                80
 12/19/2018   18:29:43   (  -0.03, -75.33) (  -0.12, -75.82)   55.39                80
 12/20/2018   18:08:18   (  -0.03, -75.35) (   0.85, -71.28)  462.96                80