Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 3 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)
 03/06/2018   18:26:13   (  -0.01, -75.18) (  -0.13, -75.65)   53.53                80
 03/07/2018   18:10:10   (  -0.01, -75.20) (   0.93, -71.13)  463.94                80
 03/09/2018   06:31:58   (   0.01, -75.20) (   0.25, -76.40)  136.51                80
 03/10/2018   06:10:34   (   0.01, -75.21) (  -0.75, -71.87)  381.02                80
 03/11/2018   18:32:31   (  -0.01, -75.25) (  -0.44, -77.18)  219.63                80
 03/12/2018   18:16:27   (  -0.01, -75.27) (   0.56, -72.64)  298.45                80
 03/14/2018   06:38:15   (   0.01, -75.28) (   0.62, -77.92)  300.58                80
 03/15/2018   06:16:52   (   0.01, -75.30) (  -0.44, -73.40)  217.58                80
 03/16/2018   18:38:49   (  -0.02, -75.34) (  -0.74, -78.70)  382.44                80
 03/17/2018   18:22:44   (  -0.01, -75.37) (   0.25, -74.17)  136.31                80
 03/19/2018   06:44:33   (   0.02, -75.40) (   0.92, -79.44)  461.32                80
 03/20/2018   06:23:08   (   0.01, -75.42) (  -0.08, -74.91)   57.37                80