Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 4 8.  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) (   0.33, -76.43)  142.42                80
 04/11/2018   06:10:46   (   0.02, -75.19) (  -0.74, -71.91)  374.24                80
 04/12/2018   18:32:42   (  -0.02, -75.21) (  -0.48, -77.21)  228.47                80
 04/13/2018   18:16:37   (  -0.01, -75.21) (   0.53, -72.68)  288.64                80
 04/15/2018   06:38:26   (   0.01, -75.22) (   0.64, -77.95)  311.65                80
 04/16/2018   06:17:02   (  -0.00, -75.23) (  -0.42, -73.43)  205.26                80
 04/17/2018   18:38:59   (   0.02, -75.25) (  -0.73, -78.74)  397.53                80
 04/18/2018   18:22:55   (   0.02, -75.26) (   0.28, -74.21)  120.08                80
 04/20/2018   06:44:42   (  -0.02, -75.27) (   0.95, -79.47)  479.36                80
 04/21/2018   06:23:19   (  -0.02, -75.28) (  -0.12, -74.95)   38.24                80