Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/12/2018   06:32:16   (   0.00, -75.19) (   0.25, -76.45)  142.53                80
 05/13/2018   06:10:50   (   0.00, -75.20) (  -0.71, -71.91)  374.21                80
 05/14/2018   18:32:47   (  -0.00, -75.21) (  -0.48, -77.21)  229.10                80
 05/15/2018   18:16:42   (  -0.00, -75.21) (   0.54, -72.68)  287.84                80
 05/17/2018   06:38:31   (   0.00, -75.21) (   0.62, -77.95)  312.47                80
 05/18/2018   06:17:06   (  -0.00, -75.22) (  -0.40, -73.42)  204.30                80
 05/19/2018   18:39:02   (   0.01, -75.23) (  -0.78, -78.72)  398.94                80
 05/20/2018   18:22:58   (   0.01, -75.23) (   0.24, -74.19)  118.28                80
 05/22/2018   06:44:46   (  -0.01, -75.25) (   0.93, -79.47)  480.85                80
 05/23/2018   06:23:22   (  -0.01, -75.26) (  -0.09, -74.94)   36.77                80
 05/25/2018   18:26:34   (   0.02, -75.30) (  -0.06, -75.71)   46.89                80