Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/15/2018   06:38:26   (   0.02, -75.22) (   0.61, -77.96)  311.19                80
 04/16/2018   06:17:02   (   0.01, -75.23) (  -0.40, -73.42)  206.02                80
 04/17/2018   18:38:58   (  -0.01, -75.25) (  -0.81, -78.72)  396.25                80
 04/18/2018   18:22:55   (  -0.01, -75.26) (   0.26, -74.20)  121.30                80
 04/20/2018   06:44:42   (   0.01, -75.27) (   0.97, -79.46)  477.95                80
 04/21/2018   06:23:18   (   0.01, -75.29) (  -0.09, -74.95)   39.62                80
 04/23/2018   18:26:30   (  -0.02, -75.32) (  -0.10, -75.71)   44.46                80
 04/24/2018   18:10:26   (  -0.02, -75.34) (   0.91, -71.18)  473.76                80
 04/26/2018   06:32:14   (   0.02, -75.37) (   0.27, -76.45)  123.95                80
 04/27/2018   06:10:50   (   0.02, -75.39) (  -0.74, -71.92)  394.53                80