Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 6 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/13/2018   06:32:14   (   0.01, -75.19) (   0.30, -76.41)  138.91                80
 06/14/2018   06:10:50   (   0.01, -75.19) (  -0.73, -71.88)  377.71                80
 06/15/2018   18:32:46   (  -0.01, -75.20) (  -0.45, -77.18)  225.90                80
 06/16/2018   18:16:42   (  -0.01, -75.20) (   0.58, -72.65)  290.99                80
 06/18/2018   06:38:29   (   0.01, -75.21) (   0.62, -77.92)  308.81                80
 06/19/2018   06:17:04   (   0.01, -75.21) (  -0.41, -73.39)  208.49                80
 06/20/2018   18:39:01   (  -0.00, -75.23) (  -0.77, -78.69)  393.83                80
 06/21/2018   18:22:56   (  -0.00, -75.24) (   0.26, -74.16)  124.11                80
 06/23/2018   06:44:44   (   0.00, -75.26) (   0.93, -79.42)  474.02                80
 06/24/2018   06:23:19   (   0.00, -75.28) (  -0.10, -74.90)   44.25                80