Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 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)
 09/07/2018   06:17:32   (  -0.01, -75.20) (  -0.39, -73.40)  204.93                80
 09/08/2018   18:39:29   (   0.01, -75.22) (  -0.78, -78.71)  397.78                80
 09/09/2018   18:23:25   (   0.00, -75.23) (   0.21, -74.17)  119.58                80
 09/11/2018   06:45:14   (  -0.00, -75.24) (   0.93, -79.45)  479.98                80
 09/12/2018   06:23:50   (  -0.00, -75.25) (  -0.06, -74.92)   37.78                80
 09/14/2018   18:27:03   (   0.00, -75.30) (  -0.11, -75.69)   45.70                80
 09/15/2018   18:10:59   (   0.00, -75.31) (   0.94, -71.17)  472.57                80
 09/17/2018   06:32:47   (  -0.01, -75.34) (   0.27, -76.43)  125.83                80
 09/18/2018   06:11:24   (  -0.01, -75.36) (  -0.79, -71.91)  392.64                80
 09/19/2018   18:33:20   (   0.01, -75.40) (  -0.43, -77.21)  207.61                80