Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 9 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/27/2018   06:45:21   (   0.00, -75.21) (   0.95, -79.45)  483.90                80
 09/28/2018   06:23:57   (   0.00, -75.21) (  -0.05, -74.92)   32.81                80
 09/30/2018   18:27:10   (   0.00, -75.22) (  -0.11, -75.69)   54.55                80
 10/01/2018   18:11:05   (   0.00, -75.22) (   0.89, -71.16)  462.30                80
 10/03/2018   06:32:55   (  -0.00, -75.23) (   0.25, -76.44)  137.12                80
 10/04/2018   06:11:30   (  -0.00, -75.24) (  -0.75, -71.91)  379.94                80
 10/05/2018   18:33:26   (  -0.00, -75.25) (  -0.46, -77.20)  223.41                80
 10/06/2018   18:17:23   (  -0.00, -75.26) (   0.60, -72.68)  294.20                80
 10/08/2018   06:39:11   (   0.00, -75.28) (   0.59, -77.95)  303.73                80
 10/09/2018   06:17:47   (   0.00, -75.30) (  -0.41, -73.41)  214.26                80