Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2018   18:26:32   (   0.01, -75.23) (  -0.11, -75.68)   51.32                80
 06/11/2018   18:10:27   (   0.02, -75.25) (   0.92, -71.15)  466.40                80
 06/13/2018   06:32:16   (  -0.02, -75.26) (   0.22, -76.43)  132.65                80
 06/14/2018   06:10:51   (  -0.02, -75.27) (  -0.81, -71.90)  384.99                80
 06/15/2018   18:32:46   (   0.03, -75.29) (  -0.43, -77.19)  216.93                80
 06/16/2018   18:16:42   (   0.03, -75.30) (   0.60, -72.66)  301.15                80
 06/18/2018   06:38:30   (  -0.03, -75.33) (   0.53, -77.93)  296.79                80
 06/19/2018   06:17:05   (  -0.03, -75.34) (  -0.44, -73.39)  221.70                80
 06/20/2018   18:39:01   (   0.03, -75.38) (  -0.74, -78.70)  378.89                80
 06/21/2018   18:22:57   (   0.03, -75.40) (   0.30, -74.17)  140.18                80