Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/23/2018   06:17:40   (  -0.00, -75.24) (  -0.38, -73.41)  207.80                80
 09/24/2018   18:39:37   (   0.00, -75.25) (  -0.78, -78.72)  394.97                80
 09/25/2018   18:23:33   (   0.00, -75.27) (   0.22, -74.18)  123.21                80
 09/27/2018   06:45:22   (  -0.00, -75.30) (   0.92, -79.46)  473.86                80
 09/28/2018   06:23:57   (  -0.00, -75.32) (  -0.08, -74.93)   44.42                80
 09/30/2018   18:27:10   (   0.00, -75.36) (  -0.08, -75.70)   39.47                80
 10/01/2018   18:11:06   (   0.00, -75.38) (   0.92, -71.17)  478.92                80
 10/03/2018   06:32:55   (  -0.00, -75.41) (   0.22, -76.45)  117.75                80
 10/04/2018   06:11:31   (  -0.00, -75.43) (  -0.78, -71.91)  400.82                80
 10/05/2018   18:33:28   (   0.00, -75.46) (  -0.37, -77.22)  200.68                80