Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 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)
 04/07/2018   18:26:26   (  -0.01, -75.19) (  -0.13, -75.70)   57.88                80
 04/08/2018   18:10:21   (  -0.01, -75.19) (   0.88, -71.17)  458.58                80
 04/10/2018   06:32:10   (   0.01, -75.19) (   0.29, -76.44)  142.52                80
 04/11/2018   06:10:45   (   0.01, -75.19) (  -0.72, -71.91)  374.06                80
 04/12/2018   18:32:43   (  -0.02, -75.20) (  -0.44, -77.22)  228.79                80
 04/13/2018   18:16:38   (  -0.02, -75.21) (   0.57, -72.69)  288.39                80
 04/15/2018   06:38:25   (   0.02, -75.22) (   0.65, -77.95)  311.42                80
 04/16/2018   06:17:02   (   0.01, -75.23) (  -0.41, -73.43)  205.71                80
 04/17/2018   18:38:58   (  -0.01, -75.25) (  -0.79, -78.73)  396.83                80
 04/18/2018   18:22:54   (  -0.01, -75.26) (   0.22, -74.20)  120.62                80
 04/20/2018   06:44:42   (   0.01, -75.27) (   0.95, -79.47)  478.49                80