Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/10/2018   06:32:09   (   0.02, -75.19) (   0.30, -76.43)  142.42                80
 04/11/2018   06:10:45   (   0.02, -75.19) (  -0.70, -71.90)  374.30                80
 04/12/2018   18:32:42   (  -0.02, -75.21) (  -0.46, -77.21)  228.32                80
 04/13/2018   18:16:38   (  -0.01, -75.22) (   0.55, -72.68)  288.68                80
 04/15/2018   06:38:26   (  -0.00, -75.22) (   0.61, -77.96)  311.82                80
 04/16/2018   06:17:02   (  -0.02, -75.23) (  -0.39, -73.42)  205.07                80
 04/17/2018   18:38:59   (   0.03, -75.25) (  -0.76, -78.74)  397.34                80
 04/18/2018   18:22:54   (   0.02, -75.26) (   0.25, -74.20)  120.21                80
 04/20/2018   06:44:43   (  -0.03, -75.27) (   0.92, -79.48)  479.22                80
 04/21/2018   06:23:18   (  -0.02, -75.28) (  -0.09, -74.95)   38.25                80