Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 5 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)
 05/09/2018   18:26:32   (  -0.00, -75.20) (  -0.10, -75.71)   58.21                80
 05/10/2018   18:10:28   (  -0.00, -75.20) (   0.92, -71.18)  458.27                80
 05/12/2018   06:32:15   (   0.00, -75.19) (   0.31, -76.44)  142.77                80
 05/13/2018   06:10:51   (   0.00, -75.19) (  -0.71, -71.91)  373.81                80
 05/14/2018   18:32:47   (  -0.00, -75.20) (  -0.47, -77.21)  229.66                80
 05/15/2018   18:16:42   (  -0.00, -75.20) (   0.55, -72.68)  287.14                80
 05/17/2018   06:38:31   (  -0.00, -75.21) (   0.62, -77.95)  313.32                80
 05/18/2018   06:17:06   (  -0.01, -75.21) (  -0.40, -73.42)  203.29                80
 05/19/2018   18:39:03   (   0.01, -75.22) (  -0.77, -78.73)  400.16                80
 05/20/2018   18:22:58   (   0.01, -75.22) (   0.25, -74.20)  116.98                80
 05/22/2018   06:44:46   (  -0.02, -75.24) (   0.92, -79.47)  482.21                80