Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 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)
 04/23/2018   18:26:30   (  -0.00, -75.17) (  -0.12, -75.71)   60.70                80
 04/24/2018   18:10:25   (  -0.00, -75.18) (   0.89, -71.18)  456.05                80
 04/26/2018   06:32:14   (   0.00, -75.19) (   0.27, -76.45)  143.04                80
 04/27/2018   06:10:49   (   0.00, -75.20) (  -0.74, -71.92)  374.06                80
 04/28/2018   18:32:45   (  -0.00, -75.21) (  -0.46, -77.22)  229.46                80
 04/29/2018   18:16:41   (  -0.00, -75.22) (   0.56, -72.69)  288.19                80
 05/01/2018   06:38:29   (   0.00, -75.25) (   0.61, -77.96)  309.46                80
 05/02/2018   06:17:05   (   0.00, -75.26) (  -0.41, -73.43)  208.33                80
 05/03/2018   18:39:01   (  -0.01, -75.27) (  -0.78, -78.73)  394.32                80
 05/04/2018   18:22:57   (  -0.01, -75.29) (   0.24, -74.20)  124.05                80
 05/06/2018   06:44:45   (   0.02, -75.33) (   0.93, -79.47)  472.22                80