Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2018   18:32:44   (   0.01, -75.20) (  -0.42, -77.16)  223.45                80
 07/02/2018   18:16:39   (  -0.00, -75.20) (   0.55, -72.62)  293.79                80
 07/04/2018   06:38:26   (   0.01, -75.21) (   0.62, -77.88)  305.41                80
 07/05/2018   06:17:01   (   0.01, -75.21) (  -0.42, -73.36)  211.95                80
 07/06/2018   18:38:58   (  -0.01, -75.22) (  -0.77, -78.66)  391.14                80
 07/07/2018   18:22:52   (  -0.01, -75.23) (   0.21, -74.12)  126.45                80
 07/09/2018   06:44:39   (   0.00, -75.25) (   0.96, -79.38)  472.27                80
 07/10/2018   06:23:15   (  -0.00, -75.26) (  -0.08, -74.86)   45.10                80
 07/12/2018   18:26:27   (   0.01, -75.28) (  -0.06, -75.63)   40.32                80
 07/13/2018   18:10:21   (   0.01, -75.29) (   0.92, -71.09)  477.66                80